Based on the social identity theory and stakeholder theory, this study explores how military social responsibility motivates subordinates’ organizational identification, and thus their work engagement and retention can be promoted. This study extends the concept of corporate social responsibility to each unit of military social responsibility. A total of 318 valid supervisor-employee dual samples were collected from 65 units in the military. Multilevel structure equation modeling (MSEM) was used to analyze all hypotheses with cross-level characteristics by conducting Mplus 8. Results of multilevel data showed that: (1) the military social responsibility has the positive impact on the subordinates’ retention intention; (2) organizational identification has the mediating effect on the relationship between military social responsibility and subordinates’ work engagement (and retention intention). Finally, theoretical and practical implications are also discussed.