Cross-Compatibility

Crew on the Polish destroyer ORP BÅ‚yskawica working on the 76mm AA gun, installed in her 1939 refit. The gun was removed in 1941 for 20mm and 40mm AA guns. Photo in the collection of the Imperial War Museums.

Nation
Year
1940
AD/BC
AD
History

When working with Allies, it is expedient to have compatible weapons to reduce the different number of supply shipments that need to be made. This has led to standardization of munitions, if not weapons, among alliances, notably NATO and the former Warsaw Pact.

During World War II, ships that escaped to Allied countries were frequently rearmed with British or American weapons, sometimes more than once as new weapons became available.