Units and Operational History

Chut, J’ecoute: The U.S. Army’s Use of Radio Intelligence in World War I

Written By: Betsy Rohaly Smoot  “This source of information, practically unthought-of before the war, has been developed to such an extent that, at the close of hostilities, it constituted one of the main branches of intelligence.”  Captain Charles H. Matz, Radio Intelligence Officer, First Army, American Expeditionary Forces, November 1918 The United States entered World …

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133d Engineer Combat Battalion and One Soldier’s Sketches of Its Operations

Written by: James Stejskal In mid-January 1945, with the darkness of night enveloping them, bridge specialists from all three companies of the 133d Engineer Combat Battalion quietly slipped down the southern embankment of the Sauer River. They were preparing to deliver soldiers from the 5th Infantry Division across the river in rubber assault boats. They …

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The Dawn of American Armor: The U.S. Army Tank Corps in World War I

Written By: Eric Anderson For better or for worse, war often drives innovation.  World War I, in particular, heralded the introduction of numerous formidable and terrifying technologies:  flamethrowers, poison gas, combat aircraft, and tanks, to name a few.  While the idea of an armored vehicle equipped with cannon can be traced as far back as Leonardo …

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The 505th Infantry Regiment

Written By: Nicholas C. Welsh Throughout its long and storied history, the 505th Infantry Regiment has maintained a proud legacy within the U.S. Army and upheld the fighting spirit established by its first commander, James Gavin.  Today, as it was then, the 505th Infantry represents an elite force of soldiers dedicated to fighting tyranny and …

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The 199th Infantry Brigade

Written By: Patrick Feng The 199th Infantry Brigade is most notable for its participation in combat operations during the Vietnam War.  However, the brigade’s Headquarters and Headquarters Company traces its lineage to its initial activation on 24 June 1921 in the Organized Reserves and its assignment to the 100th Division at Huntington, West Virginia.  Converted …

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Guns of Grizzly: The California Army National Guard On-site AAA Gun Program, 1954-1958

Written By Lieutenant Colonel Danny M. Johnson, USA-Ret. In 1954, the U.S. Army made an unprecedented move involving the Army National Guard (ARNG) to create an early form of full-time manning of hand-picked, continental U.S. air defense sites.  This program, called the Antiaircraft Artillery (AAA) On-Site Gun Program, utilized selected non-divisional air defense units situated …

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