Syrian President Bashar Assad (right) visits the Christian village of Maaloula, near Damascus on Sunday. Assad's forces have been gaining the upper hand in the fighting, and the CIA is now increasing training and aid to Syrian rebels. AP hide caption

itoggle caption AP

An airborne Apache attack helicopter takes off above a Black Hawk helicopter from the South Carolina Army National Guard base in Eastover, S.C., in 2007. The Army is planning to move all the National Guard's Apache helicopters to the regular Army, a move opposed by many in the Guard. Mary Ann Chastain/AP hide caption

itoggle caption Mary Ann Chastain/AP

As the U.S. winds down the Afghan war, the government is eyeing a much reduced military force — to its lowest level since World War II. Here, soldiers from the U.S. Army's 3rd Brigade Combat Team, 1st Infantry Division, salute during the playing of "The Star-Spangled Banner" during a homecoming ceremony Feb. 27 in Fort Knox, Ky. Luke Sharrett/Getty Images hide caption

itoggle caption Luke Sharrett/Getty Images

Santiago Erevia is one of only three living soldiers receiving a Medal of Honor on March 18. Behind him is a photo projection of his younger self in uniform. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

In 1984, an American Army unit engaged in this firefight as it shielded a Soviet defector who made a break across the Demilitarized Zone between North Korea and South Korea. Thirty years after the battle, one of the U.S. soldiers, Mark Deville, has finally received a Silver Star for his bravery. Courtesy of Mark Deville hide caption

itoggle caption Courtesy of Mark Deville

Gen. Martin E. Dempsey, Chairman of Joint Chiefs of Staff, in November of 2013. Paul J. Richards /AFP/Getty Images hide caption

itoggle caption Paul J. Richards /AFP/Getty Images

Former Defense Secretary Robert Gates says he didn't want to wait until Obama's term was up before releasing his memoir because the issues were too urgent. Brendan Smialowski/AFP/Getty Images hide caption

itoggle caption Brendan Smialowski/AFP/Getty Images

Chinese naval soldiers stand guard on China's first aircraft carrier Liaoning as it travels toward a military base in Sanya, Hainan province, in this undated picture made available on Nov. 30. China Stringer Network/Reuters/Landov hide caption

itoggle caption China Stringer Network/Reuters/Landov

A helicopter from the American security contractor DynCorp provides air support as members of an Afghan eradication force plow opium poppies on April 3, 2006, in the Helmand province, Afghanistan. John Moore/Getty Images hide caption

itoggle caption John Moore/Getty Images

Pfc. Katie Gorz (center) served as a squad leader during the training at Camp Geiger, N.C. Tom Bowman/NPR hide caption

itoggle caption Tom Bowman/NPR

A still frame taken from a YouTube video shows Marines who were later disciplined for desecrating three dead Taliban members in a 2011 incident in the southern Afghan province of Helmand. YouTube hide caption

itoggle caption YouTube