Yes, you can play Call of Duty with friends. Most Call of Duty games have a feature that allows players to play multiplayer modes with friends online. This is typically done by creating or joining a party and then entering a game together. In some games, you can also play with friends in split-screen mode on a single console.
Playing with friends allows for a more social and cooperative experience, as you can work together to complete objectives or compete against other teams. Additionally, many Call of Duty games also have a clan system, where you can join or create a group with friends and compete in clan wars or other events.
In conclusion, Call of Duty games offer various options for playing with friends, whether it be through online multiplayer or split-screen on a single console.