The survey is a comprehensive, wide-ranging email survey that goes out to about 50,000 of their readers. This year around 3,400 replied, of whom 792 said they were active duty or federally activated reservists and guardsmen. (Most respondents are actually retired military, but they focus on active duty.) The statistics in the infographic are based on the responses of those 792 respondents, unless noted otherwise (for example, at least one of the infographics only deals with people who said someone in their unit came out of the closet).