In 1798.
To the best of my knowledge, they are the same as the US Army. 2nd Lieutenant 1st Lieutenant Captain Major Lieutenant Colonel Colonel Brigadier General Major General Lieutenant General General There is only one general (aka 4-star general) who commands the entire US Marince Corps, and he is known as the Corps Commandant.
US Army: 2nd Lieutenant is 2LT, 1st Lieutenant is 1LT, Captain is CPT, Major is MAJ, Lieutenant Colonel is LTC, Brigader General is BGN, General is GEN. Private is PVT, Private First Class is PFC, Corporal is CPL, Sergeant is SGT, Staff Sergeant is SSG, Sergeant First Class is SFC, Master Sergeant is MSG, First Sergeant is 1SG.
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?
Here's the list of commissioned officers for the US Army: General of the Army (5 stars), General (4 stars), Lieutenant General (3 stars), Major General (2 stars), Brigadier General (1 star), Colonel (Eagle), Lieutenant Colonel (Silver Leaf), Major (Gold Leaf), Captain (2 Silver Bars), First Lieutenant (Silver Bar), Second Lieutenant (Gold Bar).
General Tasker H. Bliss who was advanced from Lieutenant Colonel to Brigadier General and from Major General to General.
Lieutenant 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
Lieutenant General Samuel B. M. Young.
In the US Army: 2nd Lieutenant (Butter Bar) 1st Lieutenant Captain Major Lieutenant Colonel (Light Bird) Colonel (Full Bird) Brigadier General (1 Star) Major General (2 Star) Lieutenant General (3 Star) General (4 Star)
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 Walter Krueger was born in Germany and was appointed as the first commander of the US Third Army. His parents brought him to the US in the late 19th century. He joined the US Army and was commissioned as a second lieutenant in 1901. Kruger first saw combat action in WW 1.