krig + føring, first part from Middle Low German krîch (“battle, quarrel, war; dispute”), from Old Saxon *krīg, from Proto-West Germanic *krīg (“strife, struggle, fight”), possibly from *krīgan (“to strive, struggle”), from Proto-Germanic *krīganą, possibly from Proto-Indo-European *gʷrihg(ʰ)-o-, a form of *gʷréh₂us (“heavy”), from *gʷreh₂- (“heavy”) + *-us (“forms adjectives”). Last part is the verbal noun form of føre (“to lead, guide, carry”), from Old Norse fǿra (“to bring, convey, present”), from Proto-Germanic *fōrijaną (“to lead, carry, bring”), from both *faraną (“to go, travel”), from Proto-Indo-European *per- (“to go through, carry forth”) + and from *-janą (causative suffix), from *-éyeti (causative suffix), from *-yeti (transitive suffix).
krigføring f or m (definite singular krigføringa or krigføringen, indefinite plural krigføringer, definite plural krigføringene)
krigføring f (definite singular krigføringa, indefinite plural krigføringar, definite plural krigføringane)