Clones formed the backbone of the Republic Military, which waged war against the droid armies of the Confederacy of Independent Systems. The Clone Wars were named after the Republic's clone army, which became symbolic of the conflict that had spread throughout the galaxy after a millennium of peace.

Ghost Battalion, also known as Special Ops Group, is an legendary military elite special operations unit of the Imperial Army for convert operations.  Intel is limited and sketchy at best, but what we do know is that these highly skilled operators are the best in their field and extremely effective in their execution of their tasks.