ENGINEER FIELD MANUAL - 6th Corps Combat Engineers

1 01. ,O. LC6. 1. t~ WAR DEPARTMENT. ENGINEER FIELD MANUAL . Volume HI. MILITARY ENGINEERBING. (TENTATIVE). PART ONE. COMMUNICATIONS. U Mliliar Ft:siorv anstitut8. ELNGINEER FIELD MANUAL , VOLUME II. MILITARY ENGINEERING. (TENTATIVE). PART ONE. COMMUNICATIONS. PREPARED UNDER THE DIRECTION OF THE. CHIEF OF Engineers . UNITED STATES. GOVERNMENT PRINTING OFFICE. WASHINGTON: 1932. For sale by the Superintendent of Documents, Washington, D. C. Price 30 cents rrarFw 0F US ARMY. WAR DEPARTMENT, WASHINGTON, June 16, 1932. Part One, Communications, ENGINEER FIELD MANUAL , Volume II, Military Engineering (Tentative), is published for the information and guidance of all concerned. [A.]

2 G. (7-19-30).]. BY ORDER OF THE SECRETARY OF WAR: DOUGLAS MACARTHUR, General, Chief of Staff. Major General, The Adjutant General. II. LIST OF FIELD MANUALS. A MANUAL FOR COMMANDERS OF LARGE UNITS. (M. C. L. U.). Vol. I. guide for commanders and staffs for tactical operations of large units. II. guide for the administration of large units in a theater of operations. STAFF OFFICERS' FIELD MANUAL . (S. O. F. M.). Staff principles and functions applicable to the staffs of all units, together with perti- nent reference data. BASIC FIELD MANUALS. (B. F. M.). Training, administrative, and reference data applicable to more than one arm, with special reference to the smaller units.

3 Vol. I. FIELD Service Pocketbook. (F. S. P.)-The individual. II. Infantry Drill Regulations. (I. D. R.)-Drill, dismounted ceremonies, and inspections; the infantry pack; display of equipment, and tent drill. III. Basic Weapons. (B. W.)-Marksmanship and mechanical training of the rifle, automatic ridfle, pistol, machine gun, 37-mm. gun, 3-inch trench mortar, bayonet, and grenade instruction. Technique of fire (37-mm. gun, 3-inch trench mortar, and machine gun); musketry and Combat practice of small units, instruments. IV. Signal Communication. (S. C.)-Signal regulations and technical informa- tion needed by officers and enlisted men on signal communication duty of arms other than the Signal Corps .

4 V. Transport. (T.)--Equitation, training remounts, use and care ofanimals and of animal-drawn, pack, motor, and tractor transport. VI. Administrative Regulations. (A. R.)-Army Regulations essential to small units. VII. Mllilitary Law. (M. L.)-The MANUAL for Courts-Martial, including the Articles of War; the Rules of Land Warfare, including recent conventions relative to the sick and wounded of armies in the FIELD and to prisoners of war; an epitome of the legal principles applicable to military forces when aiding the civil power. VIII. Operations of Combined Arms (Small Units). (O. C. A.)-The principles, doctrines, and methods governing the tactical employment of combined arms with reference to the small units.

5 III. IV LIST OF FIELD MANUALS. FIELD MANUALS FOR THE ARMS. The MANUAL for each arm contains, primarily, the principles, doctrines, and methods governing the employment of that arm and pertinent reference data. Infantry FIELD MANUAL . (I. F. M.). Vol. I. Units other than Tanks. II. Tank Units. Cavalry FIELD MANUAL . (C. F. M.). FIELD Artillery FIELD MANUAL . (F. A. F. M.). Vol I. Organization and Drill. II. Tactics and Technique. Coast Artillery FIELD MANUAL . (C. A. F. M.). Vol. I. IarborDefense, Railway and Tractor-drawn Units. II. Antiaircraft and Artillery Units. Air Corps FIELD MANUAL . (A. C. F. M.). ENGINEER FIELD MANUAL . (E. F.'M.). Vol. I. ENGINEER Troops. II. Military Engineering.

6 Signal Corps FIELD MANUAL . (S. C. F. M.). Vol. I. Signal Corps Troops. II. Signal Corps Operations. FOREWORD. ENGINEER FIELD MANUAL , Volume II, Military Engineering, is a compendium of technical information and suggestions as to the conduct of the most common operations undertaken by engi- neer troops in the theater of operations. The user of this MANUAL should recognize that local conditions in the FIELD will always profoundly affect the application of the principles and formulas given herein. The MANUAL contains suggestions and guides to judgment rather than regulations to be rigidly adhered to. The MANUAL will be published in three parts as follows: Part One. Communications: Chapter 1.

7 Roads. 2. Bridges. 3. Military railways. 4. Surveys and maps. (This chapter will be published when it becomes neces- sary to revise TM 2180-30 and 2180- 37.). Part Two. Defensive measures: Chapter 1. Camouflage. 2. FIELD fortifications. 3. Explosives and demolitions. Part Three. Construction and utilities: Chapter 1. General construction. 2. Water supply. 3. Light and power. TABLE OF CONTENTS. Chapter 1. Roads: Paragraphs Pages Section I. General principles .. 1-10 1-6. II. Reconnaissance-------------------------- ----------- 11-16 6-9. III. Construction --------- 17-29 9-30. IV. Maintenance and repairs ..- 30-39 30-39. V, Reference data -------------------- 40-44 39-48.

8 VI. Plant and 45-50 48-55. Chapter 2. Bridges: Section I. General principles, classification, and types -------- 51-75 56-95. II Reconnaissance ------------------ 76-82 95-104. III. Maintenance, reinforcement, and . 83-94 106-109. IV, Erection --------------------- 95-111 109-134. V. Floating bridges .. ------------ 112-128 134-169. Chapter 3. Military railways: SectionI. General principles, classes and types - . 170-195. II, Reconnaissance 148-155 195-201. III. Location and construction .. 156-169 202-234. IV. Operation 170-171 234. V. Maintenance of way .. 172-182 234-239. VI. Light railways . 183-188 239-243. VIT. ENGINEER FIELD MANUAL . VOLUME II, MILITARY ENGINEERING.

9 (TENTATIVE). Part One Communications (The matter contained herein supersedes TR 445-170, June 29, 1929 (including Cl, January 2, 1931); 445-205, July 13, 1923; 445-210, January 24, 1925; 445-220, July 13, 1923 (including Cl, January 2, 1931); 445-230, November 26, 1924; and 445-235, July 13, 1923; Military Railways, Edition of 1917 (Professional Papers No. 32, Corps of Engineers , U. S. Army), and the Ponton MANUAL , 1917. Volume II supersedes the ENGINEER FIELD MANUAL , Edition of 1918 (Professional Papers of the Corps of Engi- neers, U. S. Army, No. 29).). CHAPTER 1. ROADS. Paragraphs SECTION I. General 1-10. II. Reconnaissance -11-16. III. Construction .--------------------------------------- ------- - 17-29.

10 IV. Maintenance and repairs . 30-39. V. Reference data 40-44. VI. Plant and equipment - 45-50. SECTION I. GENERAL PRINCIPLES. 1. of time, material, transportation, and labor requires the maximum utilization of the existing road net. New road construction is held to the minimum by the repair and maintenance of existing roads, meeting increased demands by increasing the capacity of existing roads rather than by undertaking new construction. Under the heavy and contin- uous traffic of operations, maintenance alone entails a large supply of materials with much plant and a considerable force. Experience has shown, however, that certain new road construc- tion is necessary in connection with base establishments, and in major operations new roads of emergency construction are often required to facilitate supply and the movement of artillery.