Notwithstanding the prominence of the so-called Standard Model of Military Group Cohesion (SMMGC), important parts of the model are understudied: both conceptually and empirically. In this article we, first, synthesize previous research to conceptualize and measure the overlooked institutional cohesion dimension. Second, we test the validity of the proposed full four-dimensional SMMGC model using a survey of an Italian Alpini battalion, and more rigorous methods than in previous research. Results are supportive of our proposed measurements and the validity of the four-dimensional model. We thus make a methodological and an empirical contribution to further the ongoing debate on military cohesion.