Colonel (United States) Colonel (United States) In the United States Army, Marine Corps, and Air Force, colonel () is the most senior field grade military officer rank, immediately above the rank of lieutenant colonel and immediately below the rank of brigadier general. It is equivalent to the naval rank of captain in the other uniformed services. The pay grade for colonel is O-6. The insignia of the rank of colonel, as seen on the right, is worn on the officer's left side (a mirror-image version is worn on the right side, such that the eagle always faces forward to the wearer's front; the
Australian Army officer rank insignia Australian Army officer rank insignia Australian Army officers receive a commission from the Monarch, currently Queen Elizabeth II, of Australia, signed by the Governor-General of Australia, acting on her behalf. Rank insignia for commissioned officers is identical to that of the British Army, with the addition of a band containing the word "Australia" beneath the insignia. Officer ranks in the Australian Army are organised into grades for administrative and promotional purposes. The rank grades also give an indication of what that particular officer's role or position may be, although 'rank grade' is not an official term. The ranks are organised