Servicewomen and veterans say they often struggle unsuccessfully to obtain health care and benefits related to sexual violence they endured while in uniform. The Service Women’s Action Network, an advocacy group, last year sued the Pentagon and Department of Veterans Affairs under the Freedom of Information Act for documentation on their handling of sexual assaults. The group says the V.A.’s own data bears out the charge of unfair treatment. While the Veterans Benefits Administration approves 53 percent of all claims related to post-traumatic stress disorder, it accepts far fewer claims — only 32 percent — when the P.T.S.D. is related to sexual trauma.

Other national veterans’ groups are also urging the V.A. to make it easier for survivors of sexual trauma to qualify for benefits. Last year, the V.A. enacted this reform for veterans with P.T.S.D. related to combat: It lifted the difficult requirements for documenting specifically when and where a P.T.S.D.-linked trauma occurred, bending the benefit of the doubt in the veteran’s favor.

The V.A. could do the same for survivors of sexual trauma, shown in studies to be both grossly underreported and the leading cause of P.T.S.D. among servicewomen. Advocates say a medical professional’s diagnosis and written determination linking P.T.S.D. to sexual trauma, along with a survivor’s testimony, should be enough to meet the requirement. The V.A. could change the rule itself, or be directed to do so by legislation introduced earlier this year in both the House and the Senate.

Women’s advocates have long argued that military sexual trauma is a hidden epidemic. The Pentagon and Veterans Affairs have made promises to address the problem. Both departments acknowledge that they have a long way to go to transform the culture and protect women. Making it easier for those suffering from sexual trauma to receive benefits is one step toward fairness.