Lieutenant colonel (Lt Col) is a rank in the British Army and Royal Marines which is also used in many other Commonwealth countries. The rank is superior to major, and subordinate to colonel. The comparable Royal Navy rank is commander, and the comparable rank in the Royal Air Force and many other Commonwealth air forces is wing commander.
The rank insignia in the British Army and Royal Marines, as well as many Commonwealth countries, is a crown above a four-pointed "Bath" star, also colloquially referred to as a "pip". The crown has varied in the past with different monarchs; the current one being the Tudor Crown. Most other Commonwealth countries use the same insignia, or with the state emblem replacing the crown.