敵わない[kanawanai] no match for
怨敵[onteki] sworn enemy
外敵[gaiteki] foreign enemy
敵う[kanau] to come true (wish)
仇敵[kyuuteki] bitter enemy

敵討[katakiuchi] vengeance
敵同士[tekidoushi] mutual enemies
旧敵[kyuuteki] old enemy
強敵[kyouteki] formidable enemy
公敵[kouteki] public enemy

ミサイル駆逐艦[misairukuchikukan] (guided) missile destroyer
伊艦[ikan] Italian warship
仮装巡洋艦[kasoujunyoukan] merchant cruiser
艦橋[kankyou] bridge (e.g. on a warship)
艦載機[kansaiki] ship-borne plane

艦上[kanjou] aboard a warship
艦船[kansen] (ocean) vessels
艦隊[kantai] (naval) fleet
艦長[kanchou] captain (of a warship)

一隊[ittai] party
掩護部隊[engobutai] covering force
横隊[outai] rank
火力支援部隊[karyokushienbutai] fire support element
海兵隊[kaiheitai] Marine Corps

外国部隊[gaikokubutai] overseas (military forces)
格闘戦部隊[kakutousenbutai] shock troops
楽隊[gakutai] band
艦隊[kantai] (naval) fleet
機動隊[kidoutai] riot police