The most bad-ass military division ever, first to fight,last to leave, "trained to fight,trained to kill,trained to die but never will." the most elite of all fighters. These soldiers make the Army look like boy scouts.
Person 1: Jon joined the infantry for the Marine Corps.
Person 2: geeze, the infantry? he is a bad mother fucker...
Person 2: geeze, the infantry? he is a bad mother fucker...
by Kroskey July 07, 2006