Rex Applegate (Earth-616)

Colonel Rex Applegate was an combative instructor who trained Steve Rogers,^[1] and Bucky in close-quarters combat during WWII.^[2]

Master Martial Artist: Applegate is a formidable armed combatant and highly skilled in unarmed combat. He was one of the two instructors who taught Steve Rogers and Bucky in armed and unarmed close quarter combat.^[1][2]

Applegate-Fairbairn Fighting Style: Applegate's primarily weapon is his combat knife known as Applegate-Fairbairn Fighting Style. He used his blade to trained Steve Rogers and Bucky in armed combat.^[1][2]