List of formations of the United States Army during World War I

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This is a list of formations in the United States Army during World War I. Many of these formations still exist today, though many by different designations.

Seal of the United States War Department

Field Armies[edit]

Army Corps[edit]

Ambulance corps[edit]

Motor transport Corps[edit]

Army corps[edit]

Coast artillery corps[edit]

Tank corps[edit]

Signal corps[edit]


Cavalry Divisions[edit]

Infantry Divisions[edit]


Cavalry Brigades[edit]

Infantry Brigades[edit]

Field Artillery Brigades[edit]

Artillery Brigades (Coast Artillery Corps)[edit]

Depot Brigades[edit]


  • Rinaldi, Richard A. (2004). The U. S. Army in World War I: Orders of Battle. General Data LLC. ISBN 0-9720296-4-8.