In essence, this is more or less what NATO is, and it does standardize a lot of equipment across different forces and provide a chain of command. If NATO didn’

In essence, this is more or less what NATO is, and it does standardize a lot of equipment across different forces and provide a chain of command. If NATO didn’t exist though, the other guy is right: you want one military with one chain of command. The more fractured you guys are, the more ineffective any kind of unified military you create will be because you have to convince Frenchmen and Spaniards it is worth dying for Poles and Hungarians and vice versa.