Additionally, the term electrotherapy or electromagnetic therapy has also been applied to a range of alternative medical devices and treatments. It has not been found to be effective in increasing bone healing.
The adjective form of belligerent means hostile, or inclined to fight. It can also apply to a group (e.g. belligerent nation) involved in a war. The noun belligerent is from the second definition: it is a group, or especially a country, that is actively fighting in a war.
1 While engaged in military operations involving conflict with an opposing foreign force; or.  While serving with friendly foreign forces engaged in an armed conflict against an opposing armed force in which the United States is not a belligerent party.