All equivalent in rank/grade:
Lt Col (O-5) in Army
Lt Col (O-5) in Air Force
Lt Col (O-5) in Marines
Commander (O-5) in Navy
In Flanders Fields was written by Lieutenant Colonel John McCrae of the Canadian Army.
Lieutenant Colonel
A lieutenant colonel in the Indian army, a rank attained after 10 years, earns a basic monthly salary of Rs12,000.
The son had been a lieutenant colonel in the army.
The son had been a lieutenant colonel in the army.
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
Lieutenant Colonel.
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The son had been a lieutenant colonel in the army.
In NATO, "Field Grade Officer" generally refers to a mid-level commander responsible for command of a moderate-size force. This corresponds to NATO levels O-4 though O-6, which would be Major, Lieutenant Colonel, and Colonel in the US Army/Marines/Air Force, and Lieutenant Commander, Commander, and Captain in the US Navy.
Gen.= General Col. = Colonel Ltc= Lieutenant Colonel Maj= Major Cpt= Captain 1Lt=1st Lieutenant 2Lt=2nd Lieutenant Sgt=Sergeant Spc=Specialist Cpl=Corporal Pvt=Private
The officer ranks (lowest to highest) for the Army, Marines, and Air Force are as follows. 2nd Lieutenant, 1st Lieutenant, Captain, Major, Lieutenant Colonel, Colonel, Brigadier General, Major General, Lieutenant General, and General. The officer ranks (lowest to highest) for the Navy are as follows. Ensign, Lieutenant Junior Grade, Lieutenant, Lieutenant Commander, Commander, Captain, Rear Admiral Lower Half, Rear Admiral Upper Half, Vice Admiral, and Admiral.