The Underground Liberated Totally Integrated Mobile Army To Unite Mankind is a terrorist organization dedicated to uniting the entire world through the overthrow of all national governments.
No one really knows how ULTIMATUM got its start. Operations credited to the organization have been ongoing for several years, usually in Africa, the Middle East, and East Asia. (ULTIMATUM tends to leave Europe alone, as they see the European Union as a step in the right direction. At the most, their European operations involve broadcasting propaganda, not attacks.)
Despite his claims, the operative known as Flag-Smasher is not believed by various law enforcement and intelligence agencies to have founded the organization, instead being one of their top-ranked operatives. The true leadership of ULTIMATUM remain hidden in anonymity. Because their operatives are generally well-equipped, several agencies believe ULTIMATUM to have backing from businessmen and certain governments (Latverian backing has not been ruled out by Interpol; see Doctor Doom). The number of operatives worldwide is also unknown; it could be only a few hundred, or it could be several million.
The first definitive appearance of ULTIMATUM forces led by Flag-Smasher in an attempt to blow up several federal buildings in New York City. These efforts were stopped by a combined effort of the New York police department, Captain America, the X-Men, Fantastic Four, Spider-Man, and Daredevil. During this altercation, Flag-Smasher challenged Captain America to personal combat, irrationally claiming their fight was the battle to determine the future of the world. The Captain soundly trounced Flag-Smasher, and ULTIMATUM's forces were rounded up, disarmed, and arrested.
Following that, a series of bombings in Washington, D.C., attracted the attention of the FBI and CIA. CIA agent Nick Fury investigated, uncovering the bombings were conducted as part of an ULTIMATUM operation, which he helped shut down.
ULTIMATUM's next confirmed attack was in Hong Kong, again fighting Captain America, who was there on unrelated matters. The Captain later remarked that the attempt seemed personal, given that the attack was again led by Flag-Smasher and involved nothing more substantial than an assault on his person.
ULTIMATUM remains one of the better funded and organized terrorist organizations on the world stage, and many believe it is only a matter of time before they strike again.
First Post-Reboot Appearance: CAPTAIN AMERICA ANNUAL #2.
The bulk of ULTIMATUM's forces carry easily obtainable weapons, usually pistols in 9×19mm Parabellum, .40 S&W, or .45 ACP, rifles such as the AK-101 or AK-103 (modern versions of the classic AK-47; GURPS High-Tech, pp. 114, 120), or submachine guns like the H&K MP5K (High-Tech, pp. 123, 124). Some operatives carry RPG-7s (High-Tech, p. 148) when expecting to face heavy resistance (whether from armored vehicles, thick bunker doors, or superhuman bricks).
1. Secretly, ULTIMATUM is one of a number of organizations secretly run by the Red Skull; this won't be revealed until Year Two.