Details are being worked out, but officials say Defense Secretary Leon E. Panetta wants to honor the contributions of gay service members.
"Now that we've repealed 'don't ask, don't tell,' he feels it's important to find a way this month to recognize the service and professionalism of gay and lesbian troops," said Navy Capt. John Kirby, a spokesman.
This month's event will follow a long tradition in the Pentagon of recognizing diversity in America's armed forces.
Although some feared repeal of the ban on serving openly would cause problems in the ranks, officials and gay advocacy groups say no big issues have materialized - aside from what advocacy groups criticize as slow implementation of some changes, such as benefit entitlements to troops in same-sex marriages.
Basic changes have come rapidly since repeal - the biggest that gay and lesbian soldiers, sailors, airmen and Marines no longer have to hide their sexuality in order to serve.
OurServe, a once-clandestine professional association for gay service members, has nearly doubled in size to more than 5,500 members. It held its first national convention of gay service members in Las Vegas last fall, then a conference on family issues this year in Washington.
At West Point, the alumni gay advocacy group Knights Out was able to hold the first installment in March of what is intended to be an annual dinner in recognition of gay and lesbian graduates and Army cadets. Gay students at the U.S. Naval Academy in Annapolis were able to take same-sex dates to the academy's Ring Dance for third-year midshipmen.
Panetta said last month that military leaders had concluded that repeal had not affected morale or readiness. A report to Panetta with assessments from the individual military service branches said that as of May 1 they had seen no ill effects.
Gay marriage has been perhaps the most difficult issue.
Though chaplains on bases in some states are allowed to hold what the Pentagon officials call "private services" - they don't use the words wedding or marriage - such unions do not garner marriage benefits because the Defense of Marriage Act says marriage is between a man and a woman.