Sentence:  The combat fatigues worn by the vehicle personnel did not appear to be standard military issue, more similar to what you would expect <WSD>mercenaries</WSD> to wear. <WSD>Mercenaries</WSD>, loyal to nothing except themselves and their off-shore bank accounts. 
Meaning of the word marked with <WSD> tags:  A person employed to fight in an armed conflict who is not a member of the state or military group for which they are fighting and whose primary motivation is private gain.