I don't understand, this is one of the main jobs of the U.S. Army's Special Forces (also known as Green Berets). Their whole thing is learning how to train and

I don't understand, this is one of the main jobs of the U.S. Army's Special Forces (also known as Green Berets). Their whole thing is learning how to train and fight alongside indigenous forces. The 2001 invasion of Afghanistan was just that, where literally a handful of SF operators joined the Northern Alliance and helped them capture several cities from the Taliban (in the process becoming the first US soldiers to do battle on horseback since 1942)