cobelligerent

Noun

 * 1) Country that wages war against a common enemy, without the countries on the same side having a formal treaty of military alliance.

Translations

 * Danish: våbenbroder
 * Finnish: kanssasotija
 * French:
 * German: Kriegsverbündeter, Kriegsverbündeter, ,
 * Manx: co-chaggee, co-chaggeyder
 * Polish: państwo sojusznicze
 * Romanian:
 * Swedish:
 * Turkish:

Adjective

 * 1) Carrying on war in conjunction with another power.