A "soldier for hire" refers to a mercenary, a hired gun, or a freelance combatant. These individuals are paid to fight for a cause or a military organization that is not their own. Other terms that are used instead of soldier for hire include hired soldier, freelance soldier, paid fighter, and contractor. These professionals are not bound by the laws that apply to regular soldiers and may engage in activities that are considered unethical or even illegal. Some people argue that the use of mercenaries is justifiable in certain circumstances, while others believe it is a dangerous practice that undermines the stability and sovereignty of a nation.