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ArmSignalOCS Document Library


The PDF files listed below are supporting documents previously used as reference material for various articles and stories published on this website. Generally, you would have found these documents by clicking on a link within the story itself. Their purpose was to provide additional source or background material in support of the story you were reading. Because many of these documents are fascinating in themselves, we have listed them here for your additional reference and reading pleasure. As new articles are written, new files will be added here. Check back frequently and enjoy these eclectic documents.

Click any icon below to open that document.


Document CategoryWorld War II

A Study of POW Camps in Niigata Prefecture. In 1945 Niigata City was one of the four targets selected to be destroyed by the atom bomb. As we all know, the war ended before Niigata was destroyed. If it had been, 2,837 U.S. and other prisoners of war would have been killed in the process. This document provides an excellent discussion of the manner in which the Japanese handled POWs that were sent to Niigata. It was written as a college thesis by a Japanese student.


Document CategoryKorean War

List Of Signal Corps Units That Served in the Korean War. This document provides a complete list of all Signal Corps units that served in the Korean War. The name of each unit on the list comprises a hyperlink which, if you click on it, will take you to a public blog where former unit members, family and friends can inquire of and leave messages for those they served with.

NEWThe Historical Development of the Political Relationship Between North Korea and China and Its Future. This document provides a historical overview of how the relationship between North Korea and China became so fractured that today neither party trusts the other. We originally used it in an article we published in October 2017 regarding President Trump's strategy for confronting Kim Jong-un on his nuclear weapon development activities.

NEWKim Il-sung With The Center. This document provided background research for an article we published in October 2017 regarding President Trump's strategy for confronting Kim Jong-un on his nuclear weapon development activities. It discusses the famous Minsaengdan incident, a key event that set these two countries at each other's throats. Caution should be exercised when reading this document, as while it is accurate in principle, the facts are presented as communist propaganda.


Document CategoryVietnam War

Annual Historical Summary, U.S. Army Artillery and Missile OCS School, 1 January 1967 to 31 December 1967, Fort Sill, Oklahoma. This document discusses Artillery OCS and provides excellent background information as to how Signal Corps Officers interfaced with Artillery Officers. It goes into depth on how artillery operated during the Vietnam War.

NEWThe Impact Of War And Atrocity On Civilian Populations; by Derek Summerfield; Originally used as source material for our article on our December 2017 Home Page on the psychological, sociological and physiological impact of war on civilians, this document discusses the basic principles required for interventions and a critique of psychosocial trauma efforts. When thinking of what the U.S. military can do, and the U.S. government after any war, to reduce the trauma civilians experience, the concepts discussed in this document are important to know. As an Army Officer, having a background in this area will help that combat Officer reduce the stress on a local population that comes of localized combat efforts.


NEWThe Battle for the Hearts and Minds of the Vietnamese People: The Effects of the Vietnam Wars on Vietnam; by Jessica McKenzie; Originally used as source material for our article on our December 2017 Home Page, this document shows through a study of the effects of the Vietnam Wars on Vietnam how post-war political, social, cultural and economic instability, struggle and transformation was directly related to the battle for the ‘hearts and minds’ of the Vietnamese people. The relationship between the two Vietnam Wars creates the focal point for consideration of the frustration of unification that resulted from the unexpected outcome of the first war (French-Indo China war) and the importance of maintaining the enchantment of the population in the post-war second war (U.S. war in Vietnam) environment.


Document CategorySignal Corps, General

Institute of Defense Analysis: Army Science and Technology, Master Plan (ASTMP) Annex E Global Science and Technology Watch. This document presents the result of the process of nominating, analyzing and validating the international cooperative opportunities for International Technology Watch. When work was initiated on this project it was under the rubric of the Army Science and Technology Master Plan (ASTMP), Annex E, International Cooperative
Opportunities. During production and revision, the Technology Watch concept was adopted within Defense Department Research and Engineering as an outgrowth of the ASTMP Annex E. It became the umbrella for capturing technology opportunities for the Army and for other DoD entities. While begun in 2001, this document is still relevant today, especially with regards to where Signals technology will be going.

Many Army Signal Corps OCS graduates were assigned to serve in the Department of the Army's Photographic service, also known as DASPO and/or the U.S. Army Visual Information Center. Read its fascinating history here, as the Signal Corps was and still is tasked to run this critical element of the U.S. military.

A copy of the original Signal Corps Specification Document 486 which stated the specifications for and also advertised for bids to build a Heavier Than Air Flying Machine. Issued in Washington in December 1907.

Fort Monmouth Signal Corps OCS History. Written by Major (R) Richard Green, a founder and board member of this Association, this excellent document provides a synopsis of how the U.S. Army Signal Corps came about.

Organizational Chart for the U.S. Army Signal Corps, as at July 1943. This is a large chart. To see details, zoom in with your computer's magnification tools.

U.S. Cryptologic History; Early Postwar Period; Quest for Cryptologic centralization and the Establishment of the NSA: 1940 - 1952. In addition to discussing the establishment of the NSA, this document provides a masterful discussion of the evolution of SIGINT and COMINT. It is a must read for anyone seriously interested in how the Signal Corps came to be what it is today.

From a copy of the Military Review published in May 1946 comes this transcription of the messages sent by the Japanese High Command to the U.S. to notify the U.S. of their intent to surrender. This document provides the Official Signal Corps History of Message Traffic of the Japanese Capitulation.

Copy of agreement between U.S. and USSR on the upgrading of a hotline between our two countries. This document discusses the reason for the need of such a hotline, how it would work, the technology to be used, circuitry, and more. It puts to bed for all time the idea that a red phone sits somewhere in the White House waiting to be answered.

From 1917 - 2007, this document presents a History of the Commanding Officers at Fort Monmouth, New Jersey and the U.S. Army CECOM Life Cycle Management Command.

One Time Pad; discussion of encryption using a One Time Pad. This is a "stub" document which is highly technical in nature. Among other things, it covers mathematical probability of encryption, discrete random variable analysis and more. If you are interested in how One Time Pads work, this is for you. If you are an old U.S. spy from the WWII era, and forgot how your messages were encoded and printed onto burnable silk, this will bring back memories.

PURPLE Revealed: Simulation and Computer-aided Cryptanalysis; The PURPLE machine was used by the Japanese to order their attack on Pearl Harbor. This document discusses how it works. It goes into depth on the whys and wherefores of the primary cryptographic element of the PURPLE machine, a 25 position stepping switch (also known as a stepping relay or uniselector).


Document CategoryField & Technical Manuals

Signal Corps Manual of Visual Signaling - 1910; issued by the War Department Office of the Chief Signal Officer. This excellent document describes in great detail every form of approved visual signaling then in use by the Signal Corps. Among those types it covers are wig wag flags, torches, heliographs, acetylene torches, rockets, shells and much more. Technical use of these devices, forms of cipher and encryption, code calls, use at night, and on, and on... all are covered in this manual.

FM24-24, Field Manual for the AN/GRC series Radio Sets. Includes data on the AN/GRC 103, 143, 144, 163 and 222 Radio Sets. This is a partial document covering Chapter 5 of the FM.

FM21-20, 1946 War Department version. This document outlines physical training as it was given to Army recruits in WWII. Reading it will bring back fond memories ;-)

FM11-55; Mobile Subscriber Equipment, (MSE) Operations. Most WWII, Korea and Vietnam era Signals Officers have never worked with today's Mobile Subscriber systems. If you are from the old school, this manual will let you in on the secrets of how military mobile phone systems work.

TM11-237; the Technical Manual for Radio Sets SCR-131 and SCR-161, 1942 versions. Knowledgeable readers know that these instruments are portable loop, continuous wave (CW) telegraph transmitting and receiving sets.


Document CategoryOther

Army Quotations on Leadership: Department of the Army Pamphlet # 60065; Leadership Statements and Quotes

An Archive of War. In December 2014 we began a series of articles that provided examples of effective American decision making and leadership, as seen through the documents of war. The intent was to show how in the not too distant past great American leaders did not need to interject politics into everything they did and said, and that often the most profound things that happened in the world were made known to us, by these same leaders, via the most simple, clear and concise language possible. The example documents we provided in that series of articles have been reproduced here. Enjoy reading them.


1. Potsdam Proclamation - An ultimatum for unconditional surrender.

2. Final Directive Authorizing Use Of Atomic Weapons Against Japan

3. White House P.R. Notifying America Of Dropping Of Atom Bomb

4. Allies' Armistice Demands, 10 November, 1918

5. Statement By The President On The Situation in Korea, 27 June, 1950.

6. Truman's Address on Korea, July 19, 1950. 

CENTCOM: In August, 2016, the U.S. House of Representatives released an interim report accusing CENTCOM of doctoring war information and intelligence reports about ISIS to suite the Obama Administration's views, rather than portraying the situation as it really was. We penned an article on that subject, using it as the basis to discuss the disturbing trend we seem to be seeing where our political parties, leaders, government and even military have gotten into the habit of lying to the American public. You can read our article here, and read the House Report by clicking on the document graphic at the beginning of this paragraph. 

The Psychological Needs of U.S. Military Service Members and Their Families: A Preliminary Report. This document provides an excellent summary of the psychological impact of serving in the U.S. military, with a focus on the impact of deployment on family members and children. It originally served as background sourcing and training material for military task forces about to be sent overseas.

List of Military Acronyms pertaining to War in Afghanistan. For those who served in earlier wars, keeping up with the latest military jargon for today's wars can be hard to do. This list will help; besides, it's an interesting read if you just want to get a flavor for what kinds of things Army Officers dealt with in the Afghan War.

Official Army Signal Corps OCS Association Membership Application Form. Use this form to join our Association. Everyone is welcome.

ArmySignalOCS PX Order Form. Use this document to order goodies from our PX Page.

Army Signal Corps OCS Association Scholarship Donation Form. Complete this document and mail it in if you would like to help us send more deserving young men and women to college. Hooah!

US Army Signal Corps OCS Association Unit Abbreviation Key For WWII OCS Class Pages. This document will help you understand the abbreviations used on this website and our Class Pages in particular.

Japans Contribution to Afghanistan Published by the Japanese government in 2007, this document shows the kind of non-combat logistical support American wars require. Explaining where Japan's $1.2 billion in aid was spent, it provides a good background for understanding why America needs allies in the wars it fights.




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