Jan 11 (Reuters) - U.S. Defense Secretary Robert Gates on Thursday recommended a permanent increase in the size of the U.S. Army and Marine Corps, the two branches of the military most strained by wars in Iraq and Afghanistan. Gates will ask President George W. Bush to add 92,000 troops -- 65,000 to the Army and 27,000 to the Marine Corps -- over five years. Here are key facts about the size of the U.S. military. * For fiscal year 2007, the military branches are authorized for the following total number of active-duty troops: ARMY -- 512,400 (includes temporary 30,000 increase) NAVY -- 340,700 MARINE CORPS -- 180,000 (includes temporary 5,000 increase) AIR FORCE -- 334,200 * For fiscal year 2007, the armed forces are authorized for the following number of selected reserve personnel: ARMY NATIONAL GUARD -- 350,000 ARMY RESERVE -- 200,000 NAVY RESERVE -- 71,300 MARINE CORPS RESERVE -- 39,600 AIR NATIONAL GUARD -- 107,000 AIR FORCE RESERVE -- 74,900 COAST GUARD RESERVE -- 10,000 * Under Gates' recommendation, force levels would increase in two steps. First, the currently authorized temporary increases of 30,000 to the Army and 5,000 to the Marine Corps would be made permanent. Then forces would be added annually to reach the following totals: ARMY -- 547,000 MARINE CORPS -- 202,000
