Here are two examples taken from the post:

Aide-de-camp: a military officer acting as secretary and confidential assistant to a superior officer of general or flag rank.

Jaeger corps: in the German army, one belonging to a body of light infantry armed with rifles, resembling the chasseur of the French army. Sharpshooter. Also Yager and Jager.

Source: www.karenfurst.com/blog/revolutionary-war-vocabulary/