souldier
someone who fights for a personal cause and not just because of a draft or monetary rewards.
she fought like a true "souldier" with her whole heart.
Souldier
Souldier: Old spelling for soldier. As indicated by the spelling of the word, Soul(your whole essence) and Dier(One who dies), one who loses their soul, and to go die. Literally what troops do.
In wars throughout time, ever souldier commits to the sacrifice of war, the offering.