Visual Signaling
WAR DEPARTMENT OFFICE OF THE CHIEF SIGNAL OFFICER —————— MANUAL No. 6
SIGNAL CORPS UNITED STATES ARMY 1910
WASHINGTON GOVERNMENT PRINTING OFFICE 1910
WAR DEPARTMENT, Document No. 366. Office of the Chief Signal Officer.
War Department, Office of the Chief of Staff, Washington, April 20, 1910 .
The following Manual of Visual Signaling, prepared in the Office of the Chief Signal Officer, is approved and herewith published for the information and guidance of the Regular Army and the Organized Militia of the United States, and supersedes all other pamphlets or similar instructions heretofore issued upon the subject. Officers and men of the Signal Corps will thoroughly familiarize themselves with the instructions and suggestions contained herein.
By order of the Secretary of War.
Tasker H. Bliss, Brig. General, General Staff, Acting Chief of Staff .
United States. Army. Signal Corps
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VISUAL SIGNALING
TABLE OF CONTENTS.
Chapter I.
Chapter II.
THE WAND.
THE FLAG KIT.
THE HELIOGRAPH.
THE ACETYLENE LANTERN.
ROCKETS AND SHELLS.
THE SEMAPHORE.
THE SEARCHLIGHT.
COSTON SIGNALS.
VERY'S NIGHT SIGNALS.
THE ARDOIS SYSTEM.
SOUND SIGNALS.
IMPROVISED SIGNALING METHODS.
Chapter III.
SIGNAL ALPHABETS.
EXECUTION OF SIGNAL ALPHABETS.
THE MORSE ALPHABETS.
TO SIGNAL WITH THE HELIOGRAPH OR FLASH LANTERN.
INTERNATIONAL CODE OF SIGNALS.
THE ARDOIS SYSTEM.
COSTON SIGNALS.
VERY'S NIGHT SIGNALS.
ROCKET SIGNALING.
Chapter IV.
INSTRUCTIONS TO OPERATORS.
Chapter V.
LOCATION OF STATIONS.
FINDING A STATION.
OPERATION OF STATIONS.
Chapter VI.
CODES IN USE.
EMPLOYMENT OF CODES.
CIPHER CODE.
THE WAR DEPARTMENT CODE.
CIPHER CODE IN FIELD WORK.
FIELD CIPHERS.
CIPHER APPARATUS.
THE MATHEMATICAL CIPHER.
THE ROUTE CIPHER.
CIPHER DETECTION.
Chapter VII.
Reflection—refraction—lenses.
FOCUS—OPTICAL CENTER.
IMAGE—CONJUGATE FOCI.
LAW OF FOCI.
FORMATION OF IMAGE.
SPHERICAL ABERRATION.
CHROMATIC ABERRATION.
TELESCOPES.
GALILEAN FIELD GLASSES AND TELESCOPES.
PORRO PRISM FIELD GLASSES AND TELESCOPES.
FIELD GLASSES.
PROPERTIES OF TELESCOPES AND FIELD GLASSES.
FIELD GLASSES AND TELESCOPES ISSUED BY THE SIGNAL CORPS.
TELESCOPES ISSUED BY THE SIGNAL CORPS.
GENERAL SPECIFICATION NO. 263.
