[katkatkatkatket]

From your example - how does the military "unify" a diverse group of people? By aligning their thought processes and decision making. That is, by removing that very diversity.

The two words also mean literally the opposite thing. You can be along a spectrum from one to the other, but you can't have both at once.

[closewith]

What a bizarre thought process. Unification towards a common goal isn't homogenisation. Neither is common training or experience.

[katkatkatkatket]

Talking of bizarre thought processes - how can you unify, and/or receive common training or experience, without losing some form of diversity?

We all love to say how true diversity is diversity of experience. You are literally taking about unified, shared experiences.