Support is a multiplayer character class that appears only in Call of Duty 3.
This class starts with a Machine Gun that can be set up on the ground or a ledge to rain fire on opponents from a stationary position. Support also has the ability to drop ammo packs to refill allies' weapons. After achieving higher ranks, the number of ammo packs the Support class can drop increases. There is a delay between dropping ammo packs.
Support is most effective against moving vehicles because their powerful machine gun allows them to destroy vehicles faster than other classes. However, it is not recommended to use a support class to attack a tank, due to their high health. The best place to setup would be a window in a house or behind a fence, as the cover can make it more difficult for opponents to kill the player.