crusade

nouns

a series of actions advancing a principle or tending toward a particular end
"he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"

verbs

exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for
"The liberal party pushed for reforms"; "She is crusading for women's rights"; "The Dean is pushing for his favorite candidate"
is derived from
go on a crusade; fight a holy war
is derived from
is derived from
is a type of (narrower)
go on a campaign; go off to war