Designed in 1934, 12,731 aircrafts were built (including all versions). Used in European theatre from 12th august 1942 to the end of WWII.

 

Engine: 4 Wright 9 cyl Cyclone R-1820-97 Radials. 

1,200 hp each engine.

Top speed:
300 mph at medium altitude
Top altitude: 37 500 ft
Vertical speed: 541 ft/mn
Autonomy: 3 218 km
Weight light: 30,000 lb
Weight full: 59,000 lb 
Wingspan:
103 ft 9''
Length:
74 ft 9''
Weapons:
11  Colt-Browing M-2 mg 0.5 inch plus up to 20.000 lb bombs both internal and external
Crew:
10, pilot, co-pilot, navigator, bombardier, radio, tail gunner, underbelly gunner, top turret gunner, side gunner