Suicides in the US military were observed rising in 2004, most notably in the Army and Marine Corps, and particularly, in the Army National Guard (ARNG). Alarmed, Army leaders and researchers have offered various explanations and prescriptions, often lacking any evidence. In the present study, three data sets were used to examine evidence for various perspectives on suicide—dispositional risk, social cognitive, stressor-strain, and social cultural/institutional, each having different emphases on relevant explanatory variables and underlying mechanisms of suicide. Primary risk factors associated with having committed suicide among the 2007–2010 ARNG suicide cases were age (young), gender (male), and race (white), supporting the dispositional risk perspective on suicide. Some evidence supported the stressor-strain perspective in that postdeployment loss of a significant other and a major life change showed statistically significant, yet weaker associations with increased suicide intentions. Implications of results are discussed for future research and preventive strategies.