Allied forces have used this American single-engine fighter all over the world: in Europe, Africa, Asia and the Pacific theater. Equipped with an Allison V-1710-39 engine and armed with six 12.7 mm. Browning machine guns. The plane could optionally carry 500 pounds of bombs under its fuselage and 100 pounds of bombs on each wing. There were more than 1,500 P-40E-1s produced.