Callsigns


 * For callsigns in-game characters have used, see Category:Callsigns.

Callsigns are a feature in Call of Duty: Modern Warfare 2. Similar in appearance to nametags, they show up on screen whenever a player gets a kill, completes an objective and so on. They are very customizable, with at least 594 possible titles in game. Titles can be anything from "F.N.G." to "Suppressor" to "Surgical". With the titles come a visual background that has something to do with the title. Also available for customization are emblems, of which there are 294. Emblems are little more than small pictures that are just another way to distinguish yourself from other players.

Titles

 *  WARNING: This List is incomplete 
 *  NOTE: When uploading pictures for each title, please provide a clear, un-pixelated photo of 150 by 30 pixels. 
 *  NOTE: When listing criteria for earning a certain title, please refrain from posting in the first-person 

Known animated emblems

 * Rotating Skull


 * Rotating UAV - Call in 50 UAVs


 * Rotating Counter-UAV - Call in 50 Counter-UAVs


 * Rotating Air drop - Call in 50 Airdrops


 * Rotating Predator missile - Call in 50 Predator Missiles. Complete Air to Ground III Challenge


 * Rotating Emergency Airdrops - Call in 25 Emergency Airdrops


 * Rotating Sentry Gun - Call in 50 Sentry Guns.


 * Rotating Harrier - Call in 50 Harriers Complete Vertical Takeoff III Challenge


 * Rotating Nuclear Symbol - Call in 10 Tactical Nukes


 * Rotating Pave Low - Call in 25 Pave Lows


 * Rotating Attack Helicopter- Complete Attack Chopper III


 * Rotating AC-130 - Launch 25 AC-130's


 * Rotating Tesla Ball - Call in 10 EMPs


 * Rotating Modern Warfare Green Star (Call in a nuke in a game when your team is just about to lose the match: Confirmed)

Reference
the full arsenal title is when you call in at least one of every killstreak not including the tactical nuke. May need to call in everything multiple times.