Semper Fi Always Faithful Trailer This is a list of acronyms, expressions, euphemisms, jargon, military slang, and sayings in common or formerly common use in the United States Marine Corps.Many of the words or phrases have varying levels of acceptance among different units or communities, and some also have varying levels of appropriateness (usually dependent on how senior the. Yvonne With electric-blue eyes scanning the road and big-knuckled hands on…