As colleges add services for the growing number of student veterans, they find that many women in that population seem reluctant to participate. On many campuses, officials find that only a sprinkling of women take part in programs and services designed to support veterans. The low turnout appears to be at odds with the number of female veterans in college. Nearly one in five veterans who have used the new GI Bill at a two- or four-year college is a woman, according to an analysis of 250,000 veterans by the Department of Veterans Affairs. Women's apparent reluctance to take part, say campus officials, presents a dilemma for institutions still figuring out how best to help all veterans. But female veterans, colleges are learning, often face different challenges than men. With these concerns, many colleges are seeking to connect female veterans with resources to assist them. Colleges are forming all-female support groups, hiring women to work in veterans offices, and trying to start conversations by showing films like "Lioness," about the first women to fight in direct ground combat, in Iraq.