Essay contests don't generally get a lot of mainstream attention. The Secretary of Defense National Security Essay Competition, for example — whose past winners and finalists have penned papers titled "Planning Convergence" and "Nation Building: A Joint Enterprise" — has never made media waves. Until this year: "The Efficacy of Don't Ask, Don't Tell," the winning entry, is a breakout hit.

Written by Col. Om Prakash while he was student at the National War College (he is now at the Pentagon), the essay offers a rebuke of the 16-year-old policy. It claims there is no evidence openly gay soldiers negatively affect unit performance or morale and concludes that "it is not time for the administration to re-examine the issue; rather, it is time for the administration to examine how to implement the repeal of the ban."

The essay, published in Joint Forces Quarterly, a scholarly journal published by the National Defense University Press, was reviewed by Adm. Michael G. Mullen, the chairman of the Joint Chiefs of Staff and the nation's highest military officer, before publication.

Prakash devotes a considerable amount of thought to the concept of "unit cohesion," a term defined by Congress as "the bonds of trust among individual service members that make the combat effectiveness of a military unit greater than the sum of the combat effectiveness of the individual unit members."

Pointing out that countries such as Australia, Britain, Canada and Israel, which have lifted bans on gays in the military, have seen "no impact on military performance, readiness, cohesion or ability to recruit or retain," Prakash writes that the "don't ask, don't tell" policy "forces a compromise in integrity" that is ultimately "damaging to the unit cohesion its stated purpose is to preserve."

The views expressed in Joint Forces Quarterly do not necessarily reflect those of the Defense Department, but policy experts and pundits are seeing the attention paid to Prakash's essay as the latest harbinger of major political change on the issue. Gabriel Winant of Salon.com pointed out that Lt. Daniel Choi, an Arabic linguist who was discharged from the National Guard earlier this year after announcing he was gay during a TV interview, has been invited to speak at his alma mater, West Point. Nathaniel Frank, author of "Unfriendly Fire: How the Gay Ban Undermines the Military and Weakens America" and a senior research fellow at the University of California, Santa Barbara's Palm Center, calls the Prakash paper a watershed.

"The Joint Forces article doesn't mean that Mullen and the military are prepared to repeal overnight," Frank told me. "But it does represent a notable contrast from the tone we were seeing even a year ago. In my experience talking to countless people in the military, I've found that the people who excel are the people who are prepared. And what we're seeing may reflect a form of preparation for the tasks the military faces."

Beyond its support for the cause of repealing "don't ask, don't tell," the article provides chapter and verse against the general argument that gay rights and gay people diminish heterosexual rights and people. Its straightforward assessment of unit cohesion — complete with explorations of "task cohesion" and "social cohesion" and which is more important to military success (it's task cohesion) — is all but a primer on how "lack of unit cohesion" has become code for something else: namely, old-fashioned bigotry.

For a while, it looked like bigotry would get its biggest push toward oblivion in the domestic realm, with the acceptance of gay marriage, but perhaps it will be the issue of gays in the military that reaches the tipping point first. In any case, that adage about everything being fair in love and war may soon take on a greater resonance — on the battlefield if not yet at the altar.