
The term "grunt" is used in the military as a general term for someone who's MOS (Military Occupational Specialty) is "Infantry". In the Marine Corps all MOS' preceeded by the number "03" are Infantry. About as "grunt" as you can get in the Corps is "0311 - Basic Rifleman" (but they prefer the term "Jarhead"). In recent times, Grunt is used to refer to an Army soldier of the combat arms branches, being Infantry ("Grunt"), Armor ("Tanker"), and Cavalry...