The main idea behind complex systems is that the ensemble behaves in ways not predicted by its components. The interactions matter more than the nature of the units. Studying individual ants will almost never give us a clear indication of how the ant colony operates. For that, one needs to understand an ant colony as an ant colony, no less, no more, not a collection of ants. This is called an "emergent" property of the whole, by which parts and whole differ because what matters are the interactions between such parts.
Thus, a military system is better understood by the property of the system. Not by overanalyzing the individuals within the military structure.