The HS.404 is an autocannon originally designed by and produced by the Swiss arm of the Spanish/Swiss company Hispano-Suiza in the mid-1930s. Production was later moved to the French arm of Hispano-Suiza.
HS.404 in the TCM-20 twin anti-aircraft configuration, displayed at the Israeli Air Force Museum
20 mm Hispano-Suiza Mk V on display at the Imperial War Museum Duxford
Israeli anti-aircraft M3 Half-track with twin H.S. 404 auto-cannons
US Patent drawing of the Hispano Suiza cannon
The M3 half-track 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 M3 was extensively produced, with about 15,000 standard M3s and more than 38,000 variant units manufactured.
Three M3 half-tracks at Fort Knox
On display in Ursel (Northwest of Ghent), Belgium
Rommel in Tunisia speaking with troops riding a captured American built M3 half-track during Battle of Kasserine Pass.