Lieutenant Colonel

Lieutenant Colonel rank insignia in the Royal Marines

Lieutenant Colonel (Lt Col, LTC), often abbreviated "Colonel" in conversation, is a rank of commissioned officer in many armies, marine forces and air forces.

Lieutenant Colonel typically ranks above a Major and below a Colonel. It is equivalent to Commander (RN, USN) and Wing Commander (RAF).

A lieutenant colonel is typically in charge of a Battalion (infantry) or Regiment (artillery/armoured) in an army. In the British Army and Royal Marines, a Lieutenant Colonel wears a crown above a pip. In the US Armed Forces, the insignia is a silver oak leaf. The rank of Lieutenant Colonel in the Philippines equivalent to the rank of Superintendent in Police, Fire, and Jail force.

Officer Ranks
Service	Cadet	OF-D	OF-1	OF-2	OF-3	OF-4	OF-5	OF-6	OF-7	OF-8	OF-9	OF-10	All
British Army, Royal Marines	OCdt	2LT	Lt	Capt	Maj	Lt Col	Col	Brig	Maj Gen	Lt Gen	Gen	FM	all
Royal Navy	O/C	Mid	SLt	Lt	Lt Cdr	Cdr	Capt	Cdre	RAdm	VAdm	Adm	AotF	all
US Army, USAF, USMC	Cadet	2LT	1LT	CPT	MAJ	LTC	COL	BG	MG	LTG	GEN	GA	all
US Navy	MIDN	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	FADM	all