cobelligerent


co·bel·lig·er·ent

C0439200 (kō′bə-lĭj′ər-ənt)n. One, such as a nation, that assists another or others in waging war, usually without entering a formal alliance.

cobelligerent

(ˌkəʊbɪˈlɪdʒərənt) n (Military) a country fighting in a war on the side of another country

co•bel•lig•er•ent

(ˌkoʊ bəˈlɪdʒ ər ənt)

n. a nation allied to another in waging war. [1805–15]