The latest Xbox 360 Call of Duty game to go backwards compatible on Xbox One is Ghosts.
Ghosts, released on Xbox 360 and Xbox One at launch, joins Call of Duty 2, Call of Duty 3, Call of Duty: World at War and Call of Duty: Black Ops I, II & III in the backwards compatible program.
Back in 2014, a program would let Xbox 360 owners upgrade their copy to Xbox One — this is perfect if you somehow missed out.
