2 hours ago, Alpha17 said:Wookiees may understand Basic just fine, but how are most of their squadmates supposed to understand them? Intersquad communication is vital. The EU explained the very specific circumstances that helped Han learn Shyriiwook, and most average troopers won't have that background. (and let's not even start on the stupidity of him speaking it in Solo) Leia also spent years trying to learn it, and had trouble, and she's a trained diplomat. Even assuming that one or two people in the squad miraculously speak this very niche language, what happens when those people aren't available? Language barriers in military units have been a thing for a long, long time, and even in a galaxy far away, they'll cause far more problems than its worth. Creating ethnic units that speak the same language and have a similar culture and background has historically been the answer, at least as long as those populations were trusted by their governments.
of course you should consider that not able to speak shyriwook, doesn’t mean they can’t understand it perfectly. For instance, nobody is able to “talk” R2 or BB8 “languages” but at least we see Luke, Rey, Obi-wan, Leia, Anakin and some more understand the droids. And there’s a bunch of languages in Star wars (hutesse) that are known for the great majority of beings. That said, if you consider that an intergalactic conflict that involves a thousand planets has to be “split in units” considering culture... mmmm.... well...
And real life has shown us that british or US allied soldiers were perfectly able to fight alongside french or norwegian units. In my country, Spain, there was a civil war that involved soldiers from England, France, Russia, Greece, US and Spanish republic soldiers, and in the other side there were german, italian, moroccan and spanish fascists... and all of them fought toghether three whole years.