Comparative military ranks Armies, air forces (non-Commonwealth), space forces, marines Navies, coast guard Air forces (Commonwealth system) Senior Commissioned Officers Field marshal or general of the army or general of the air force Admiral of the fleet or grand admiral Marshal of the air force General or colonel general or army general Admiral or general admiral Air chief marshal Lieutenant general or army corps general Vice admiral Air marshal Major general or divisional general Rear admiral or Counter admiral Air vice-marshal Brigadier or brigadier general Commodore or flotilla admiral Air commodore Colonel Captain Group captain Lieutenant colonel Commander Wing commander Major or commandant Lieutenant commander Squadron leader Junior Commissioned Officers Captain Lieutenant Flight lieutenant Lieutenant or first lieutenant Lieutenant junior grade or sub-lieutenant Flying officer Second lieutenant or junior lieutenant Ensign or midshipman Pilot officer Officer cadet Officer cadet Flight cadet Non-commissioned officers Warrant officer or sergeant major Warrant officer or chief petty officer Warrant officer Sergeant Petty officer Sergeant Enlisted ranks Corporal or bombardier or specialist Leading seaman Corporal or Leading aircraftman Private or gunner or trooper or sapper Seaman Aircraftman or airman or aviator