に就て[nitsuite] concerning
に就き[nitsuki] because of
去就[kyoshuu] committing one's self
就いては[tsuiteha] in line with this
就きましては[tsukimashiteha] in line with this

就く[tsuku] to ascend (the throne)
就ける[tsukeru] to install (a king, emperor, etc.)
就学[shuugaku] entering school
就学義務[shuugakugimu] compulsory school attendance
就学児童[shuugakujidou] school child

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