Plate X

But their general course will represent a decided flattening of the pressure curve all out of proportion to the flattening of the velocity curve. The higher pressures go, the smaller the increase in velocity for each increase in the charge. In the pressure curve there will be a range where the plotted points will coincide quite well with the smoothed out curse. This uniform range represents the tolerance of the powder and the point of the greatest uniformity is the balance point. The tolerance...

Info

5-Inch Rocket Launcher (Figure 9) Dummy Rifle Grenade w dispenser MX-306A G (Figure 10) 2. lf no rushing sound i* heard or is weak, cneck Air Valve. Li3ten. Remove and re in rrt battery connector. Listen. Insert new battery. Listen. If still no rushing sound is heard, et is delectlvc. Send it to a repairman. 3. lf rush-.ng sound is hearc, push Press-to-Talk switch. If rushing sound continues, set is defective. If rushing sound ceases, blow into microphone and new sound (called sidetone) should...

Bullet Lubricants

The function of a bullet lubricant, like any other bearing lubricant, is to provide a moving film between the bullet and the barrel, while the former is passing through the bore. If this is accomplished, it makes no difference what material is used for lubrication. Most of the waxes, or so-called waxes, make good bullet lubricant just as they are, but some of them have faults of a physical nature which prevents their convenient use without mixing them with certain of the softer greases. If...

Vl Food

u There le food m the Jungleli you know where to find It. Pitt one good meal each day but nibble on any food that you may hare or can find. Eat strange lood In email quaatltlee and wall for t reaction. Avoid all mushrooms. There Is Uttle nutritional value Ln them and much danger. (1) to village*. eat only food that is hot. If possible. 1 for fear of offending your boat yov ha e to eat native food that is not hot. take a yellow pill to avoid dysentery. All rentable or fruit procured ln a...

General Description And Comment

The *haped charge hand grenade consist of a shaped charge, a cylindrical sheet metal rhatgc container, a conical sheet rnctr.1 drag, an unpad' nee mechanism, and a wood handle wilh a ahert mrtsil drag k> ck end pin. When the lock pin in removed and the grenade U thrown, a spring force* the conical drag hack ov the handle lo MahilLte lb* grenade9* flight (drag is attached Bo charge cunlaiBer by strips of material inaidc the cone). When line grenade strikeB, the Impact fun ignite the shaped...

Oygen Hose Acetylene Hose

Figure 134 shows the method of scarfing edges to be welded and various ways of manipulating the torch and welding rod. In every case the metal must be filed or ground well back from the edge, forming a wide notch or groove into which the metal is flowed. This ELECTRIC ARC WELDING AND ELECTRIC WELDING differ somewhat in the technique and apparatus employed. The seams of gas tanks on automobiles are often electric welded but not arc welded. The method employed in the Ford plant is to run the...

Gzrir v r og

HAWKINS MINE No. 75 & 75A and GRENADE. ters> detonators first, into slots so IGNITER & PET. NoT 8 that red end of igniter comes under V of Total weight of mine 2 3 4 lbs. Expl-preS ure Plafce. Bend over metal tabs, osive filling 1 1 4 lbs. Gelignite. Min- , Disarming. Bend back the metal tabs, imurn safe spacinq. Mines are laid at a TlltJthe lne and slide out the 2 pre-density of one yard. ar< rd igniters. Note. Never force, if Arming. Insert open end of detonator niters and...

AfTr V ZT

BRITISH STANDARD SHRAPNEL MINE MK I & II Total weight of mine 8 lbs. Filling. Amatol 40 60. 40 Amatol and 6096 ammonium nitrate and 60 TNT. Arming. Operation by trip-wire. Prepare safety pin for easy withdrawal. Remove cartridge pistol and drop in Balli-stite cartridge, cap upwards. Replace cartridge pistol. Push pin in as far as it will go. Tighten with a spanner. Check safety pin of detonator pistol and remove pistol. Drop in capped detonator cap, cap upwards and replace pistol. Prepare...

Time Fuse

FVSE Hgure it Ribfaoe Charga LlvK H______ d. Past Explosive, Excellentresultshavebeea obtained in outting railroad falli and othar steel targele byusing improvised paate explosive. An example of paate effeotiveneea followe the etandard steel outtingformula. Pa 3 i A, yield an snawer of 660 grams of exploaive raqalred to cut a rail 0 lb yard. Eighty grama of paate exploaive were actually uaed, and this oharge removed mora than a foot of the traok. e. Shaped Charge . If...

Cleaning Bores And Removing Obstructions

T HAVE stated elsewhere that the average shooter who is not en-titled to be classed with that ultra super select and specially favored fraternity commonly called gun-cranks usually takes his firearm, if any, to the gunsmith to be cleaned and since in most cases, a considerable period of time has elapsed since the shooting occurred, the gunsmith's inspection of the bore is quite likely to result in rather startling disclosures. Of course the gun didn't need much cleaning it was only shot a few...

Front Sight

Terations, b being the Peret, and c the Newman hammer, the latter designed to slip from under the thumb, the trigger being removed from the gun. When the spur is altered the line of sight is not obstructed except momentarily, by the nose of the hammer in falling. A small amount ground from hammer nose will eliminate even this small objection. ALTERING COLT S. A. REVOLVER TO SHOOT SHOT. Bud Dalrymple, l. S. Hunter, started it all out in Wyoming some several years ago, and wrote so...

Explosives And Demolitions

As an engineer soldier, one of your most important jobs is the handling of explosives and demolition tools. It takes training to become an expert demolition man. There is a great deal to learn. In this chapter you will flnd enough fundamentals to give you a good start. With these essentials and with experience you can gradually become an expert. b. You must learn this job thoroughly. It is a great responsibility. When you are given the Job of blowing up a bridge,...

Particularly Ao When

lt g GOOD SUBGRADE AND FOUNDATION SUCH AS SAND. 9AND OR GRAVEL, OR ANY GRANULAR MATERIAL. Figure 133. Wheel-load distribution on runway. Figure 133. Wheel-load distribution on runway. Ficum 134. Airplane concealed with artificial materials garniahed halt-top net, artificial trees in foreground. 128 82 not end there. It is just as important to keep that field in a condition to be used at all times. Since the field comes under fire of various sores, engineers must be alert and ready to fill bomb...

American Antitank Or Antipersonnel Mine

This is a small cylindrical mine containing 6 lbs. of high explosives. It employs a spider to transmit pressure to the fuse. The flanged rim on top of the body is matched in two places for assembling the spider. The fuse used with the mine is the MI. AT. fuse which is inserted into the fuse pocket on the top of the mine. On the side of the mine is a carrying hand le. a Remove the spider from the bottom of the body. b Insert the fuse and push down until it engages. When this is assembled, the...

Elementary Rigging

The engineer often makes his own machines for use in heavy work and as substitutes for tools and machines that are unavailable. The machines are simple, but they save much labor. By rigging is mean the handling of rope manila or wire and chains with blocks and tackles to raise, move, or hold heavy loads. The combinations which the engineer rigs up with rope are really simple machines. This chapter explains the principles and methods of rigging, which will be one of your most...

Notch Back

a hi n down, the target should bs above the horizontal. This can be accomplished by piling cirt in the box or by placing a stake behind the target. h In construction, the target o simply nailed to the lid of a h.nged ammunition bcx rr.ortar. grenade, etc. and a rope is used to raise the lid of the box. u 1 The box should be buried in the ground and the soil placed into the box to provide stability. d A short length oi wire or string from the lid of the box to the rear edgs allows the ltd to...

Explosives Theory

Ww2 Cordtex

OPENING LECTURE An explosive is a substance, made up up of various nitrates and chemicals, and when suitably stimulated, decomposes rapidly from a solid into a gas with the liberation of intense heat, resulting in a sudden and intense pressure causing violent disruption of the air and its immediate surroundings. I.E , one slab of TNT expands in the form of gas, in one second, approximately 18,000 times its own size in space. This rate of change, from a solid to a gas, is worked out in meters...

Assault Of A Fortified Position

A typical prepared defensive system of fortifications consists of a number of mutually supporting strong points, such as concrete emplacements called pillboxes. The best way many of these can be destroyed is by foot troops armed with special weapons. It's a difficult cornbined-arms job to which engineers are often assigned. It requires aggressiveness, skill, speed, teamwork, courage, and determination. This chapter outlines procedure for a simple assault on a single...

British Switches

The pressure switch consists of the following parts - 1 Main casing and base plate. 2 Striker rod, block and spring. The main casing is made of brass. In the base there are small holes for attachment to any suitable surface. The striker and rod are made of cast iron 1 8 in diameter, reduced to 1 16 under the shear stud, which will break it under a point load of 30-40 lbs. A heavier striker is also available, which is 3 16 in diameter, reduced to 3 32 under the shear stud and will fire under a...

Plate Xiii

Many handtoadcrs are situated in localities where they cannot buy tin or antimony easily, and they may wish to use scrap lead or commercial alloys of lead. When one reads of bullet alloys made of definite proportions of metals, the idea is sometimes created that it is necessary to be very precise about one's alloys. This is true in the case of an occasional rifle that may happen to be cantankerous. In general, any alloy that can be cast into 181 bullets which shoot...

Camouflage

Camouflage is a weapon one of the most important we have- It consists oi all the work we do to hide ourselves and our equipment from enemy observation. By means oi careful camouflage we can protect ourselves, confuse the enemy, cause him to waste valuable ammunition, or make him fall into a trap. b. Remember that if the enemy can't see us. he can't hit us effectively. If you learn to understand and to carry out the important principles of camouflage, you can give your...

Earl Naramore

Major, Ordnance Department Reserve The Army of the United States Sketch by LT. COJL JULIAN S. HATCHER Small'Arms Technical Publishing Company Onslow County, North Carolina U. S. A. Thomas G. Sam v orth September, 1937 The frontispiece illustrates a characteristic velocity and pressure curve plotted far different charges a3 explained on put 12S and 130. This Is a typical curve and does not represent figures published anywhere or for any definite rifle, cartridge or bullet. It Is seen that the...

Bullet Sizing And Lubrication

Inside Lubricated Bullet

Bullets and their sizing and lubrication arc subjects so closely related to one another that it is impossible to consider them separately. Consequendy, diere is some overlapping of these subjects that can not be avoided, especially when lead alloy bullets are involved. Jacketed bullets, as made in the United States, require no lubrication nor do they have to be sized in any way as they arc made corrccdy for the cartridges they are intended to be used in. The .303 British service bullet which...

Specialists

The Corps of Engineers does many differeAt. kinds of work. Much of this work is of a special technical nature. It is so technical, in fact, that whole engineer units companies, battalions, regiments are designed to do only one particular kind of job. Following is a list of some of the types of engineer units and what they do. a. Engineer general service combat units. The basic engineer units are combat troops of various kinds, and can be UsSed for any type of...

Becket Hitch

Ends of the splice may be tapered by continuing the tucking process for two or three tucks, cutting out a few fibers from each strand after each tuck. Rolling the splice under the foot or under a board will make it compact and smooth. 24. Long Splice. The long splice must be used where it is necessary tb keep the increase in diameter to a minimum. It also has a neater appearance. The long splice is used to join ropes of equal size when the rope is to run through a block. a. Stage I Unlaying. To...

Baited Skewer

Aa aoon aa you catcb a flah cut out the glUs anc large blood vessels thst are neat to the beckhone. Scale It. Out the flah by cutting open I is stomach and acraptng it clean. Cut off the head unleas you want to cook the fish oo a pit. Flah like catfish and sturgeon have no acalee. Silo them. Small fish under four lnchea require no gutting, but ahould be scsled or skinned.

Small Leak

BAD leak PUNCTUM TKWZK Chapter Three is inseparably associated with them. The composition of black powder varies only slightly in different countries, the proportions being about 75 fo potassium nitrate saltpeter , 10 sulphur, and 15 charcoal. The nitrate and sulphur must be of exceptional purity and only a few woods are suitable for making the charcoal. As a boy, the writer used to make his own black powder of about a 60-20-20 mixture. The saltpeter used was the ordinary commercial product and...

Xj Target Reconnaissance Report Guide

General Description Propossd Action _ Route To and from target areas, approach and withdrawal routes, rallying points. xxiitelOQ flupport Biles, CicScHltca and flrul iseemfcly areas may M . selected. Requirements Determine arsllalilllty before recon Unusual features ot site Guard system _ Labor and time estimate required for bypass or repair Situation map sketch orerbead ftew Magnetic north, principal terrain concealment, avenues of approach to tar jet, direction of enemy, etc. Line drawing of...

Powder

Gun powder or Black Powder as it is often called, is the oldest propellant known for use in fire arms. As made for small arms, it is usually a mixture of potassium nitrate, sulphur and charcoal. Sodium nitrate is used in place of potassium nitrate in blasting powders which, by the way, should not be used in small arms ammunition as the sodium nitrate makes the powder more violent in its action. It also increases the tendency of the powder to gather dampness and is more difficult to ignite....

Holzmine Antitank

This wooden box mine contains 11 lbs. of explosive, either poured or in molded blocks. A pressure block protruding through the lid operates the igniters by pushing out the safety-pin. The mine functions when a pressure greater than 400 lbs. acting on the pressure block shears two small wooden dowels and allows the pressure block to move downwards and operate the igniters. b Take out the pressure block. c Make sure that the shear block is firm, otherwise, discard the mine. d Remove the exploder...

Girin Hitch Cn A Frame

The upper end of the A frame should be laid across the hood of the vehicle and the attachment made as in Figure 3. If the nosed truck is equipped with a winch, the winch cable snould be rigged for a 2-to-l mechanical advantage, with the end of the cablc secured to the apex of the A frame. If a separate truck is needed because the nosed truck has no winch, a block should be attached to the apex of the MA frame and a 2-to-l mechanical advantage rigged from the truck emplaced in front...

Rifle Barrel Design And Fitting

WE debated a long time as to whether we would include in-siiuetiuus for boring, reaming, and- rifling barrels in this book, and we decided not to for several reasons. These operations are a separate art in themselves, and a very specialized art in these days. To describe them would require several hundred pages, and peating Arms Company, the Niedner Rifle Corporation, and several such description would be intelligible only to a trained machinist small barrel makers. It was also used at Rock...

Disarming Methods

Neutralization, the making of a dangerous boobytrap safe to handle, involves two steps 1 disarming or replacing safeties in the firing assembly, and 2 defuzing or separating the firing assembly from the main charge and the detonator from the firing as sembly. If neutralization is not possible, the boobytrap must be destroyed. b. Destruction in Place. A boobytrap may be destroyed in place if some damage is acceptable, as is generally the case out of doors. An operator, may...

Cardboard Cylinder

Commercial or improvised Blade Powder. 1. Tape cardboard or heary paper into a cylinder approximately 1 2 the diameter of the tin can or other container. 2. Insert the fuse into one and cf this cylinder, pack tightly with black powder and tape the ends closed. 3. Insert the cylinder Into the can a shown in Figure 23 and surrousd with bolts, nuts, metal scrap and or stones. Closa the can with a lid which has a holt in the center for the fuse to pasa through. Li the container used has.no lid. It...

MfflSLfifrcVo sg

Total weight of mine 8 lbs. iwith spider 8x4 body . Explosive filling A 1 2 lbs. TNT or Baratol. Minimum safe spacing, 2 yards. Arming. Remove spider, metal cup and washer as with the MK V. Examine shear wire of fuse and withdraw safety pin at arms length and leave on top of mine body. Place No. 3 fuse in mine. Replace metal cup, washer and spider. Engage studs in slots, cover and camouflage. Disarming. Remove spider, metal cup and washer. Inspect shear wire and insert safety pin. Remove No. 3...

Chemical Delay Igniter

This consists of an aluminum body containing a cocked striker which is retained by a celluloid disc. When the igniter is armed, a quantity of acetone is released to surround the celluloid disc, which, after a certain lapse of time, is sufficiently softened to allow the release of the striker. Use plastic today . Different times of delay are indicated by the color of the threaded portion in the middle of the igniter body. From a limited number of tests, the following times have been obtained -...

Plate V

53 Cracks sometimes occur in the bottom of primer pockets. Tins defect is traceable to the use of mercuric primers and is, I believe, limited to folded head cases such as are used in much of our present day revolver ammunition. As primers should never be seated without inspecting the primer pockets first, this defect will be easily observed. Its effect is to permit an excessive amount of gas to reach the primer, driving it back violcntiy against the recoil plate of the revolver, setting back or...

Il Patrol Leaders Order

Identification, location, activity, b. Friendly Forces Mieslon of next higher unit, location and planned actlona of units on right and left, fire support available for patrol, mission and routes of other patrols. c. Attachment and Detachments. 2. MISSION What the patrol Is going to accomplish S. EXECUTION Subparagraph for each subordinate unit. b. 9peclfio duties of elements, teams, and individuals. 1 General and epeelal organisation. 2 Uniform and equipment...

Poncho Material

And the backing sheet under he top sheet, of nv erlay paper and formulate the plan. Remove the map and reposition ihe backing sheet under many as eight layers of overlay paper then retrace ynur plan from the original overlay shuet ustnjj a ball poirt pen with heavy pre nurc. The reproduction joo i then finished. Remove the holding plate, cov r sheet, sheets of overlay and carbon paper above the backing sheet and reassemble Tor future use.

Platter Charge Explosive

Expedient Platter Charge

Machinery may be made inoperative by shearing its drive shaft. To make the diamond charge Figure 7 . rut a piece of tinfoil, paper, or burlap Into a diamond shape, with the long axis several inches longer thaa the circumference of the shaft to be sheared. The short axis should be about 1 2 the length of the long axis. Mold a plastic explosive over the diamord and place blasting caps into the explosive at the short axis points. To cut regular steel, the explosive should be about 1 4-inch thick...

Reeving Triple Block

SINGLE BLOCK MECHANICAL ADVANTAGE TWO SINGLE BLOCKS MECHANICAL ADVAMT AGE 2 gt TWO SINGLE BLOCKS MECHANICAL ADVAMT AGE 2 gt Figure 57. Simple tackles. Examples of block and tacWc rigging, showing mechanical advantage. Each p represents a iope wh en supports an equal part of the weigh acting on tlie whole tackle. ONE SINGLE, ONE DOUBLE BLOCK MECHANICAL Figure 57. Simple tackles. Examples of block and tacWc rigging, showing mechanical advantage. Each p represents a iope wh en supports an equal...

Mechanical Powder Measures

The Ideal, Bond and Belding ic Mull powder measures are very convenient and useful devices for measuring powder charges rapidly and with sufficient accuracy for any purpose excepting long range target shooting and for maximum charges- The method of using these measures is described in the literature of their respective manufacturers so there is no need of repeating that here, but it is pertinent to explain the principles underlying their operation and their limitations. The Bond and Ideal...

Boats And Rafts

Infantry Support Raft

Often, before a bridge can be built, part of an army must cross a river by means of boats. It is the job of engineers to supply these boats, to manipulate and paddle them, and to carry other troops, principally infantry, across the stream. Every soldier, and especially every engineer, should be a strong swimmer. b. Much of the crossing is done at night. Speed, silence, and coordination are demanded . It is up to you to be able to handle your boats in such a manner...

Chapter Combat Weapons

The big job of engineers Is construction and demolition in order to assist our movement and hinder that of the enemy. That job doesn't leave much spare time for fighting. However, the engineer is a scrapper and is given combat weapons with which to protect himself at work and so that he can reinforce the infantry when necessary. 91. Combat Weapons. The principal weapons of the com bat engineer and their characteristics are as follows a. Hand grenades. lt 11 Offensive...

Small Parts

JV T ODERN gunsmithing, particularly that branch of the work ap-plying to custom-built arms and remodeled military rifles, as well as special target pistols and rifles, has brought into accepted use many small parts not formerly known on the standard factory products. Many of these are not necessary to the functioning of the arm, nor do they affect its shooting qualities their principal use is that of convenience in handling, and in improving appearance. Hie private gunmakers are loath to part...

Troop Leading Procedure

Study terrain from map, sketch on serial photo for 2 Observation and fields of fire. 3 Corer and concealment. 41 Obstacles. b. Make quick estimate of situation thorough as time permits . a. Movement of unit where, when, how . b. Reconnaissance select route, schedule, persons to take along, use of eubordlnatee , n 5 c. Issue of order notlry subordinate leaders of tme and place .

Balances

Where the greatest accuracy is desired, I consider a good balance superior to a good scalc. Balances are commonly graded as grades A, B, and C. Grade A balances arc expensive, their extreme sensitivity makes them slow to use, and they will not develop their full accuracy except in the hands of a person experienced in their use. They can be classed as unsatisfactory for the practical loading of ammunition. This may sound like a strange thing to say it will probably only be taken at its face...

Sector Limit And Elevation Stakes

Sector Stakes

3 Lay the gun to engage other target areas on a sector limit. In a primary sector this is accomplished by using the procedure in 21 above the only difference is that no depression Is allowed for irregularities in the terrain. In a secondary sector when the gun Is mounted or tripod, and the traversing and elevating mechanism is removed, the procedure described in lt l above is used in addition to driving in an additional stake under he gas cylinder extension to fix the elevation c. THE NOTCHED...

Bridges

An uniordable river is a difficult obstacle to an advancing army. The enemy, therefore, destroys all possible bridges in the path of advance. It is the Job of engineers to build substitute bridges In the shortest possible time. 68. Speed and Teamwork. Army engineers should be the fastest bridge builders in the world. They can build fixed and floating bridges quickly because of two things a. Their equipment is dpsigned for hasty, rnggptf construction. b. Their building crews are...

Twated

Back into the hole, the secondlme of charges dl splices It entirely. The resulting teardrop shaped crater la very steep sided on the blunt end the end having the three delay charges . a. Bangalore torpedes, if aTaiiable.cau be extremely effective If employed In an antipersonnel role. Beat results are obtained If the Bangalore js planted upright In the ground so that the fragmentation effect will radiate out in 360 degree . b. The fragmentation hand grenade Is a versatile weapon tha lends itself...

Introduction

This Field Expedient Handbook it deigned to provide Junior ofiicer and noncommnsiored officer with handy guide Df expedients to overcome some seemingly insurmountable problems in a variety of area . The handbook is no cure-all but we hope it serves a definite purpose in the field nevertheless The material herein was compiled from pa it article in INFANTRY selected TM and FMs. and information provided by the USAI5 instructional departments. One chapter, however, is largely the result of work by...

Smallarms Technical Publishing Company

Plantersvillc, South Carolina THE AMERICAN RIFLEMAN U. S. A. tirely, he enlisted and soon was assigned to instruction on the subject of Guns and Gunnery at San Diego. In July, 1942, he was assigned to special duty at the U. S. Naval Base at Oakland, Calif., where he worked in a small arms repair unit. Everywhere his fine work and gunsmithing ability was recognized and he was made Gunners Mate 1st Class last February. Clyde Baker will live long in the memories of those who loved the outdoors,...

Dried Seed Timer

A time delay device for electrlcalflring circuits can be made using the prlo-clpla of expanaloo of dried seeds. Dried peas, beans or other dehydrated seeds Wide mouth giasa Jar with nonme'.al cap L Deter mint the rate of rite of the dried aeeds elected. This-La necessary to determine delay time of the timer. a. Place a aample of the dried seeds in tha Jar acd cotci with water. b. Measure the time it take for the aceda to r ae seeds increase 30 in I to 2 houra. 2. Cut a disc from thin metal...

Assembly

Fill the container with thickened fuel and seal it tightly. I Wrap three turnn of the detonating cord on lop of ihe container along the inside of the top rim. Peck moist earih or mud against the detor.ating cords. This packing holds the detonating cord in place and acts as a tamper Attach an electric blasting cup to one end of the detonating cord. Z gt Prepare a detonating ccrd-WP hand grenade assembly see example in flame fuugasse and attach it to the top of the container or In a...

Clyde Baker

One of the most popular contributors to Rifleman pages, Clyde Baker, author of many home gunsmithing articles, died April 8, 1943. In ill health for some time he entered Oak Noll Naval Hospital on March 22 and passed away following an operation. Mr. Baker was born at Cowgill, Missouri, March 26, 1894, but received most of his schooling at Kansas City, Missouri, where his family moved. At the outbreak of World War I he enlisted in the Marine Corps and had nine months service in France. Upon...

Lapping Barrels And Bore Polishing

Lapping Bores

T APPING is an operation involving the cutting of a piece of metal by rubbing it with a softer piece of metal coated with an abrasive. The operation of grinding automobile valves is not lapping, but grinding for both the valves and the block are of similar hardness, and both are cut by the valve grinding compound. If the valve were made of lead or soft brass, the grit would bed itself in the metal, actually cutting it very little, but would cut the valve seat even faster for that reason....

Nqv

a The RCL stgaalcootrollig station 'B and marker A which are always on tha approach or downwind end of the runway. b The row of markers which are always on the left side of the land-lag aircraft. 4 The pilot usually attempts to land stralght-ln en tha Initial approach. Whan this is not possible, a modified landing patten ta Oowi using a minimum of altitude for security reasons. Two minutes before target time the RCL csneae all Light of tha LZ pattern to be tamed on and aimed Ilka a pletel la...

Engineer Insignia

The turreted cr.stle fig. 144 is the distinctive insignia of the Corps of Engineers. It was first used during the Revolutionary War and has been used in various forms since that time. Introduced by French officers, who were part of our first Corps of Engineers, It apparently was modeled after one of the Rates of the city of Verdun, Prance. It differs from engineer insignia now in use by any foreign army. The turreted castle serves as a reminder of fortification work which has been an important...

Field Fortifications

When you are exposed to enemy Are the best way to obtain individual protection is to dig a protective holt from which you can fire. Depending upon how much time you have and upon other conditions, such as enemy fire, available tools, and type of earth, there are a number of standard entrenchments which will protect you best. Terrain is evaluated for military use according to the following factors 2 Field of Are firing position . 3 Cover including protection...