The
M3 Half-track, known officially as the
Carrier, Personnel Half-track M3, was an
American armored personnel carrier half-track widely used by the Allies during
World War II and in the
Cold War. Derived from the
M2 Half Track Car, the slightly longer M3 was extensively produced, with about 15,000 units and more than 50,000 derivative variants manufactured (most of which were interim designs).
The design was based on the
Citroen-Kégresse half-track. The developers attempted to use as many commercial parts as possible. There were also several dozen variants for different purposes. The M3 and its variants were supplied to the
U.S. Army and
Marines, as well as
British Commonwealth and Soviet
Red Army forces, serving on all major fronts throughout the war. Although at first unpopular, it was used by most of the Allies at some point in the war.