遠征[ensei] expedition
外征[gaisei] foreign campaign
再征[saisei] second punitive expedition
出征[shussei] departure (for the front)
出征家族[shusseikazoku] family of a soldier at the front

出征軍[shusseigun] army in the field
出征軍人[shusseigunjin] soldier at the front
征伐[seibatsu] conquest
征服[seifuku] conquest
征服者[seifukusha] conqueror

仇討[adauchi] vengeance
かたき討ち[katakiuchi] vengeance
討つ[utsu] to shoot (at)
検討[kentou] consideration
検討委員会[kentouiinkai] investigative commission

再検討[saikentou] re-examination
剿討[soutou] cleaning up
相討ち[aiuchi] simultaneously striking one another (in kendo, etc.)
尊王討幕[sonnoutoubaku] reverence for the emperor and the overthrow of the shogunate
討ち破る[uchiyaburu] to break