noun
military assistance
Refers to aid provided by one country's military to another, including supplies, training, or direct support.
その国は隣国に軍事援助を提供した。
That country provided military assistance to its neighbor.
経済援助 is economic aid, while 軍事援助 specifically refers to military aid.
Compound of 軍事 (military affairs) and 援助 (assistance, aid).