Question

Why do the mercenaries fight?

Answer 1

Answer : Mercenaries would fight if they were paid not for their country and sometimes they would turn against the Empire that paid them.

Answer 2

Mercenaries fight for money or other forms of payment rather than for political interests. Beginning in the 20th century, mercenaries have increasingly come to be seen as less entitled to protections by rules of war than non-mercenaries.