Since the end of the Cold War, U.S. military forces have participated in an increasingly complex array of military operations, from disaster relief and peacekeeping to deadly combat. The unique nature of many of these missions calls into question what it means to be a soldier and may require adjustments not only in military doctrine, but also in the military's combat-oriented warrior identity. Franke examines the extent to which individuals who will lead U.S. forces in the 21st century are prepared cognitively to shift among mission requirements. Using survey methods, Franke explores the social, political, and professional attitudes and values of cadets at the U.S. Military Academy at West Point. By comparing cadets' responses across classes, he assesses the effects of military socialization on their commitment to the military's dual-mission purpose and their cognitive preparation for combat and non-combat assignments. By developing a dynamic model of social identity, Franke extends the applicability of social identity theory from the experimental laboratory environment to a genuine social field setting. Assessing the dynamic relationship between identity, values, and attitudes for identifications that are normatively meaningful to respondents, he illustrates the importance of individuals' identification with social groups for their behavioral choices.