I can't find it anywhere on the Internet, and I was hoping someone here might know.
The Ancient Egyptians had a great number of ways for saying "soldier". The hieroglyphs that have a significance meaning soldier as a determinative were:
Anyway, here's a few words I've found in dictionaries:
The Egyptians had many different words for soldier. Perhaps, the most basic one was "ahati":
The determinative (the guy with the stick) is the symbol you will usually see associated with words involving soldiers or fighting.