I don’t know where i heard this but i heard a theory that having elite forces can make an army as a whole weaker. This may be anecdotal and not based on fact, but the theory went that by having an elite unit/Special forces, an army would be made weaker as the best soldiers would be concentrated and therefore would not rise as high in rank. Where as not having special forces, these soldiers would be allowed to climb the rank and this would lead to the best officer leading the men. And by having experienced soldiers spread out in the ranks it could make the other soldiers around them better. Think how well a squad just out of training could do vs one with an experienced veteran in it. The veteran squad would be better.

I’m sorry if this is the wrong place to ask this. But i can’t find anything on google or looking at other ask subs. I feel like this is the best place to ask as maybe there are a few WW2 historians floating about that could maybe answer.

Please Pm if you have a better sub that i could ask this on.