• World War Two
• USAAF
• P-40N-5 - revised cockpit canopy, 6 wing-mounted machine guns, and wing racks for bombs or drop tanks (1,100 built)
  
• P-40N-20 - with more power engine V-1710-99. (1,523 built)
• Kittyhawk Mk.IV - P-40N export versions for RAF, RAAF & RNZAF (586 built)
  

Battle of Imphal [8 Mar ~3 Jul 1944, India] - Japanese armies attempted to destroy the Allied forces at Imphal and invade India, but were driven back into Burma with heavy losses. It was the turning point of the Burma campaign (South-East Asian Theatre of the Second World War).