It is standard for military regimes to emphasize a nationalistic identity to the exclusion of all rival defining concepts. The military has no ideology, has no belief, no philosophy, only power and the uniform.
It is always therefore important for military regimes to annihilate any other competing source of identity
But it is important to point out that military nationalism doesn’t have the inherent positive points of genuine nationalism, insofar as it is not actually concerned about the interests of the nation. The nationalism propounded by a military regime really means de-politicization; it means the annihilation of ideology, and in fact, the annihilation of identity.