The generalizability of personality-outcome relationships in military settings, argued to be a strong situation in the present research, was examined using metaanalysis. Effects based on the Self Description Inventory (SDI) gathered from 20 independent military samples (k = 117, total N = 34,217) were analyzed. Overall, findings concerning conscientiousness and neuroticism provide evidence for the validity of personality in military samples. However, a few constrained associations (e.g., openness-training performance) were obtained, providing some support for the exploration of the military context as a moderator of certain associations. The results are useful to militaries seeking to incorporate personality in selection decisions.It is well known that personality is related to important job outcomes such as performance and training. Barrick, Mount, and Judge (2001) consolidated findings from 15 meta-analytic studies to demonstrate the validity of the five factors of personality. However, the effects are generally small, prompting researchers to question the generalizability of personality findings and to suggest the exploration of moderators. One such moderator is the situation in which personality-outcome relationships are examined Schneider, 1996). Indeed Tett, Jackson, andRothstein (1991) demonstrated that certain situational characteristics (e.g., occupational group) attenuated the validity of personality.Among the many situational moderators Tett et al. (1991) examined in their meta-analysis, the type of sample (military versus civilian) emerged as a potential Correspondence should be addressed to