Originally Posted by GUWonder

"Old World" imperial powers -- or at least their legacy rumps -- have quite the history of retaining foreign nationals to do their military business. But even in the "New World", there's quite the history of it too.

When it comes to a military with enlisted (non-citizen) personnel with more than a dozen foreign nationalities represented, the US probably has more such nationalities represented than just about any other country save perhaps a handful. German immigrants to the US enlisting in the US military (as a German citizen) is but one of many such examples from the US military in the last several years.