Split screen is featured in Call of Duty 2, Call of Duty 3, Call of Duty 4: Modern Warfare, Call of Duty: World at War, Call of Duty: Modern Warfare 2, Call of Duty: Black Ops, Call of Duty: Modern Warfare 3, Call of Duty: Black Ops II, Call of Duty: Ghosts, Call of Duty: Advanced Warfare, Call of Duty: Black Ops III, ...
After reaching the Main Menu, connect a second controller. Press A on the second controller to connect the other player online. Once connected, press A again to attach the split screen player. When at the profile selection screen opens, choose a profile that is different than the first player's profile.