They typically command corps-sized units (20,000 to 45,000 soldiers) Lieutenant General is a temporary rank given to officers only if they are appointed to positions that require the officer to hold such a rank.
In the British Army, Field Marshall is the highest rank. 2nd lieutenant Lieutenant Captain Major Lieutenant Colonel Colonel Brigadier Major General Lieutenant General General Field Marshall
General of the Army, General, Lieutenant General, Major General, Brigadier General, Colonel, Lieutenant Colonel, Major, Captain, Lieutenant, Sergeant First Class, Staff Sergeant, Sergeant, Corporal, Private First Class, Private. Is the list missing specialist?
A fairly senior army officer.
In the Army there are five different levels of General: Brigadier General, Major General, Lieutenant General, General and General of the Army.
Lieutenant General
A Corps Commander is a lieutenant general.
In the Navy, the ranks are (in ascending order) Ensign, Junior Lieutenant, Lieutenant, Lieutenant Commander, Commander, Captain, Rear Admiral (lower half), Rear Admiral (upper half), Vice Admiral, Admiral, and Fleet Admiral. In the Army and Air force, the ranks are (in ascending order) Second Lieutenant, First Lieutenant, Captain, Major, Lieutenant Colonial, Colonial, Brigadier general, Major General, Lieutenant general, General, and general of the army (or air force).
In the Navy, the ranks are (in ascending order) Ensign, Junior Lieutenant, Lieutenant, Lieutenant Commander, Commander, Captain, Rear Admiral (lower half), Rear Admiral (upper half), Vice Admiral, Admiral, and Fleet Admiral. In the Army and Air force, the ranks are (in ascending order) Second Lieutenant, First Lieutenant, Captain, Major, Lieutenant Colonial, Colonial, Brigadier general, Major General, Lieutenant general, General, and general of the army (or air force).
See link for history of Army ranks. Private Private First Class Corporal Sargent Staff Sargent Technical Sargent Master Sargent 1st Sargent (One per company) Warrant Officer Junior Grade Chief Warrant Officer 2nd Lieutenant 1st Lieutenant Captain Major Lieutenant Colonel Colonel Brigadier General Major General Lieutenant General General General of the Army (Wartime only, 5 only at a time)
Lieutenant General
General Tasker H. Bliss who was advanced from Lieutenant Colonel to Brigadier General and from Major General to General.
A Captain holds the Paygrade of O-3 A Major holds the Paygrade of O-4 The Officer Rank structure in the US Army goes like this, from lowest to highest: 2nd Lieutenant 1st Lieutenant Captain Major Lieutenant Colonel Colonel Brigadier General Major General Lieutenant General General