Today is the beginning of the next Call of Duty: Ghosts Clan War, which takes place in "The Springs." You have until Monday, February 24 at noon Pacific to capture and hold as many nodes on the Clan Wars map as possible. View the map and talk with your clan via the free Call of Duty app, which runs on mobile devices as well as Windows 8.
If you're in the Diamond Division, that event begins Friday and goes through Sunday. You will receive instructions through your clan leader if you are eligible for that opt-in division. More info on that is here.