https://youtu.be/eHCTaUFXpP8 😛
The Rebellion never struck me as a formal military outfit, more like a resistance movement. ER is ostensibly set in the real world, Star Wars is not. And there are plenty of war movies set on Earth that take liberties to serve the plot.
Sure, and so do the Simpsons, but nobody would call Dr. Nick a brilliant churgin. 😉