468th Bombardment Group Martin-Omaha B-29-25-MO Superfortress 42-65276.  793d Bombardment squadron, Kharagpur Airfield, India
United States Army Air Forces
Taken in 1944
Birdsall, Stephen (1980), Superfortress, the Boeing B-29 - Aircraft Specials series, Squadron/Signal Publications; 1st edition, ISBN-10: 0897471040, Image source listed as United States Air Force