Captain
An O-5 in the navy is a Commander
In the US and British armed forces, a Naval Commander is equivalent in rank to an Army Lt. Colonel and a Naval Captain is equivalent in rank to an Army Colonel. Please see the related links.
This is filed under US ARmy and US Navy, so let me clarify.. A Captain in the Army is pay grade O3, whereas a Colonel in the Army is pay grade O6. Colonel is the higher of the two. The Navy has a different rank structure for officers than the other branches. A Captain in the Navy is 06 - equivalent to Colonel. The rank of Colonel does not exist in the Navy.
No, there is no rank of commander in the Army. In the Army commander is a title, not a rank. In the Navy, there is a rank of Commander, it is the equivalent of Lt Colonel or O-5.
Commander is a rank exclusive to the Navy. It is the equivalent of an Army/Air Force/Marine Corps Lieutenant Colonel (O5). A Navy Captain is equivalent to an Army/Air Force/Marine Corps Colonel (O6), whereas a Captain in the Army, Air Force, or Marine Corps is O3. A Navy Captain outranks a Commander, but a Commander outranks an Army, Air Force, or Marine Corps Captain.
A Royal Navy Captain is the same as a United States Navy Captain - it's the equivalent of a full Colonel in the armies of both countries. The next rank up is Commodore - Brigadier equivalent.
O3 in the Army, Marine Corps, and Air Force; O6 is the Navy and Coast Guard (a Navy and Coast Guard Captain is equivalent to an Army/Marine Corps/Air Force Colonel).
Very basically speaking, the difference is one step in rank. While a Lt. Colonel is normally referred to a Colonel, a Colonel is sometimes to referred to as a "full bird colonel" to distinguish the difference. In the Army at least, a Lt. Colonel wears a clover leaf rank insignia (silver, I think) but a full Colonel wears an eagle insignia, hence the reference "full bird."
Captain (The Navy has a rank of Captain that is equivalent of an Army Colonel, or such.)
Lieutenant Colonel, also for Marine Corp and Air Force. The equivalent ranks are: Army / Marines / Air Force - Lt. Colonel (Silver Oak Leaf) Navy / Coast Guard - Commander (Silver Oak Leaf) Both pay grades are O-5.
It depends which country and branch of service one is speaking of. The American military does not have the rank of Major-Colonel, the ranks of Major, Lt. Colonel and Colonel all out rank a Captain, unless the Captain is Navy or Coast Guard, then he would be equal in rank to the Colonel. In US Military, in all but the Navy, the order of these three ranks from lowest to highest is: * Captain * Major * Lieutentant Colonel * Colonel A Captiain in the Navy is the equivalent in rank of a Colonel in the Army, USAF or USMC
Yes, in all branches of service. The Navy uses a different structure for officers than the Air Force, Army, and Marines. In the Navy, a Captain is O6, equivalent to a Colonel in the remaining branches. A Navy Lieutenant is O3, equivalent to Captain in the other branches, and a Navy Lieutenant Junior Grade is O2, equivalent to a First Lieutenant in the other branches.