The ranks in the United States Navy are, for officers: Ensign, Lieutenant Junior Grade, Lieutenant, Lieutenant Commander and Commander. Higher grades are Captain, Rear Admiral lower half, Rear Admiral upper half, Vice Admiral and Admiral.
The highest rank for a Naval officer is Fleet Admiral, but this rank is only used during wartime. The last men to hold the rank served during World War II, as of 2015.
The ranks of enlisted men and women in the Navy are Chief Warrant Officers that rank from W-2 to W-5. There used to be a rank of Warrant Officer, but this rank was retired.
The ranks of the United States Marines are, for enlisted Marines, Private, Private First Class, Lance Corporal, Corporal and Sergeant. Higher ranks are Staff Sergeant, Gunnery Sergeant, First Sergeant, Master Gunnery Sergeant and Sergeant Major. The highest ranking for an enlisted Marine is Sergeant Major of the Marine Corps. Warrant Officers rank from Warrant Officer W-1 to Chief Warrant Officers W-2 to W-5.
Marines in E-4 and E-5 pay grades are non-commissioned officers. The higher pay grades can be career Staff Non-commissioned officers.
Commissioned officers in the Marines range from Second Lieutenant, First Lieutenant, Captain, Major and Lieutenant Colonel. Higher ranks are Colonel, Brigadier General, Major General, Lieutenant General and General.