This chapter focuses on military couples and factors that affect their experiences of work, stress, and health using a life course perspective. An introduction to the definition of military couples is provided followed by a brief review of previous research on marital quality and divorce among military couples. The core of the chapter describes the advantages of using a life course perspective to examine the military life course for couples, and two critical transitions of military life are more fully examined. Specifically, periodic relocation and deployment and their impacts on military couples are reviewed in detail. Future directions for research on military couples are provided, and the use of the Convoy Model of Social Relations as an integrative approach to examine military personnel and family members’ stress and health across the military life course is introduced.