Victims of sexual assault in America's armed forces are demanding reform.

Secretary of Defense Chuck Hagel has ordered a review of the military's handling of rape cases after an Air Force general threw out the aggravated assault conviction of a pilot.

A bill has been introduced to strip commanders of the power to overturn verdicts or reduce sentences.

On Wednesday, military women and men shared their stories of abuse before a Senate panel. They testified the military's criminal justice system is broken -- and commanders often don't seem to care.

Brigett McCoy, a former Army specialist, testified that she was raped by her superior officer and she initially didn't report the assault.

"The year that I was raped, the same year I was raped again by another solider in my unit. Another year, I was sexually harassed by a commissioned officer in my unit," McCoy said.

Petty Officer Brian Lewis said he was serving in the Navy when a commanding officer sexually assaulted him.

He said an estimated 56 percent of sexual assault victims in the military are men.

"This is the part of the crisis that the Department of Defense does not acknowledge," Lewis testified.