In a dream, mercenaries represent soldiers of punishment. (Also see Soldiers)
Dream dictionary: Mercenaries dream meanings
…(Angels | Travel) Soldiers in a dream represent God’s arc angels and the soldiers of mercy, while mercenaries in a dream represent the soldiers of punishment. If one sees himself as a soldier eating his meal inside the chambers of a king in a dream, it means that he will control a land without much efforts on his part. If one’s name is listed as a soldier in a dream, it represents his welfare, satisfaction, or that he will continue his education. If a bedridden person sees himself as a soldier in a camp, or that he is discharged from the army in a dream, it means that his illness will end in his death, or it may mean difficulties, distress and losses. A gathering of soldiers in a dream means destruction of the wrongdoers and victory of the righteous ones. A soldier carrying a scourge or arrows in…