U.S. army soldiers from Ghostrider Company, 3rd Squadron, 2nd Stryker Cavalry Regiment take a break after searching a house during Operation Phantom Phoenix in the village of Abu Musa on the northern outskirts of Muqdadiyah, in the volatile Diyala province, about 90 kilometers (60 miles) north of Baghdad, Iraq, Thursday, Jan. 10, 2008. Facing another decision about U.S. troop levels in Iraq by spring, U.S. President Bush said Saturday Jan. 12, 2008 it's "fine with me" if generals recommend no more reductions than those already planned to take the force posture down to about 130,000.(AP Photo/Marko Drobnjakovic)
This image provided by the U.S. Army shows Maj. Gen. Dana J.H. Pittard. The Pentagon has reprimanded an Pittard for steering a defense contract to a firm run by two former classmates at West Point, according to a published report. (AP Photo/U.S. Army)
Ann E. Dunwoody – As the first woman to serve as a four-star general in both the U.S. Armed forces and the U.S. Army, Ann E. Dunwoody has been blazing trails for female service members since 1974. After 38 years of service, Ann retired from her final role as commander of the AMC in 2012.
Cathay Williams – Not only was this soldier one of the first females to enlist in the United States Army, Cathay Williams was the very first African American woman to enlist in armed service. She served as one of the Buffalo Soldiers for three years in the 1800s.
BAE Systems is developing an Electromagnetic (EM) Railgun for the U.S. Navy and U.S. Army. The weapon blasts a 23-pound hyper-velocity round that can be fired from a rail gun, Navy 5-inch guns or 155mm artillery weapons. The round is projected to travel at Mach 7.
President Obama, accompanied by Maj. Gen. Jeffrey S. Buchanan, left, commander of the U.S. Army Military District of Washington, lays a wreath at the Tomb of the Unknowns, with the aid of Sgt. 1st Class John C. Wirth, on Memorial Day, Monday, May 25, 2015, at Arlington National Cemetery in Arlington, Va. (AP Photo/Pablo Martinez Monsivais)
U.S. Army Soldiers conduct combatives training during the Ranger Course on Ft. Benning, GA., April 20, 2015. Soldiers attend Ranger school to learn additional leadership and small unit technical and tactical skills in a physically and mentally demanding, combat simulated environment. (U.S. Army photo by Pfc. Antonio Lewis/Released) ** FILE **
U.S. Army, Pfc. Chelsea Manning poses for a photo wearing a wig and lipstick. Defense Department officials say hormone treatment for gender reassignment has been approved for Chelsea Manning, the former intelligence analyst convicted of espionage for sending classified documents to the WikiLeaks website. (AP Photo/U.S. Army, File)
Army Chief of Staff Gen. Ray Odierno announced April 1, 2015 that, effective immediately, the U.S. Army is changing its tattoo policy after feedback from soldiers. (Image: U.S. Army, Staff Sgt. Stephanie van Geete)
FILE - This undated file image provided by the U.S. Army shows Sgt. Bowe Bergdahl. A U.S. official says Bergdahl, who abandoned his post in Afghanistan and was held by the Taliban for five years, will be court martialed on charges of desertion and avoiding military service. (AP Photo/U.S. Army, file)
FILE - In this Feb. 21, 2015, file photo, U.S. Secretary of Defense Ash Carter, left, walks with U.S. Army Gen. John Campbell upon arrival at Hamid Karzai International Airport in Kabul, Afghanistan. The pace of U.S. troop withdrawals from Afghanistan will headline Afghan President Ashraf Ghani’s visit to Washington(AP Photo/Jonathan Ernst, Pool)