Lt. Col. George Armstrong Custer has been reinstated and assigned to command the 7th Cavalry Regiment at Fort Hays. The regiment has become a ragtag outfit of thieves and ruffians and Custer must whip the soldiers into shape to fight, the Kiowa, Sioux and Blackfoot tribes who confront them. These tribes are being supplied shotguns by a white gunrunner and Custer and his men must rescue General Terry and the Fifth Cavalry Regiment from annihilation when they are ambushed and trapped by a large Kiowa war party.

When his wife is killed by hitmen, a former Green Beret takes vengeance on the drug gangs responsible for her death.

A GI in Vietnam saves his buddy's life, but in the process is shot in the head. The injury results in brain damage to the point where he basically has a child's brain in a (very large) man's body. When they get out of the army the two open up a bar together, but some local gangsters make things tough for them after they refuse to take part in brutal "cage" matches where fighters battle to the point of serious injury and/or death.

The film takes place aboard an American submarine in the Pacific during World War II. The sub's commander is ordered to stop and pick up an underwater demolition team led by Lt. Hayes, whose mission is to locate and destroy a US submarine sunken in a lagoon off Bikini Atoll before the Japanese are able to raise it and capture the advanced radar system on board.

A young cavalry officer is assigned the job of bringing in a band of Apaches who have been terrorizing the countryside.