Flag

In Capture the Flag Multiplayer gametypes, the Flag is what must be taken, ran back to your base, and "captured." Halo's CTF is much like the real-life game, except that you actually have a real flag on a flag pole, which is usually unheard of in the real world. Also, rather than hiding the flag, it is always in a pre-determind position, often in the middle of the base, and your only method of defending it is to kill other people and wait for them to respawn.