Extreme Prejudice is a 1987 American action western film starring Nick Nolte and Powers Boothe.
The character of Jack Benteen was loosely based on Joaquin Jackson, now a retired Texas Ranger. Nolte spent three weeks in Texas with Jackson learning the daytoday activities of a Ranger. Nolte took what he learned and incorporated it into his character the mannerisms and dress.At the El Paso airport, five U.S. Army sergeants meet up with Major Paul Hackett Ironside, the leader of the Zombie Unit. The unit is composed of soldiers reported to be killed, and are on temporary assignment under Hackett for this mission. ........
Source: Wikipedia