Cohesion is one of the most studied group phenomena and there is an agreement among scholars today that cohesion is a key contributor to team functioning and performance. A large body of research has shown that cohesion has several positive effects on psychological, social, and behavioral outcomes. Since research on cohesion has increased significantly in recent decades there is a need for an updated overview of research regarding antecedents and outcomes of cohesion in a military context. In this paper, a systematic literature review is conducted. The paper adheres to suggestions by scholars, relating the results in accordance with the dimensionality (i.e. social, task, or general) and organizational level of the construct (i.e. horizontal, vertical, or organizational) as well as focusing exclusively on studies with a longitudinal design. The paper highlights gaps in the literature and provides direction for future research.