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What were the units who fought in WW2

World War II
Allied Unit Histories

A historically accurate overview

Based on official US, British and Canadian sources

The units of WW2

Which units fought during WW2

This growing collection explores the military units that fought during the Second World War. Many of the combat chronicles are reproduced from The Army Almanac (October 1948), an official post-war reference published by the United States Army. Where appropriate, material is used with permission from the U.S. Army Center of Military History and enhanced with information from additional official and archival sources.

The project remains a work in progress. New American, British, Canadian, Polish, Free French, German, and other wartime formations will be added over time, creating an expanding reference library for researchers, students, family historians, and anyone interested in the history of World War II.

Last updated: June 2026: updated with new commanding officer profiles, UI design improvements and more structural data.