Answer: crusade

AnswerCrossword Clue
CRUSADEImportant campaign
CRUSADEA fight for the right.
CRUSADENoble enterprise.
CRUSADENewspaper enterprise, for example.
CRUSADEExpedition of the 12th century.
CRUSADEStrive to further a cause.
CRUSADEExpedition against the Albigenses.
CRUSADEAttack zealously
CRUSADEMission
CRUSADEZealot's enterprise
CRUSADEEisenhower's "... in Europe"
CRUSADEMore than a cause
CRUSADEConcerted action for some cause.
CRUSADEWhat a cause might turn into
CRUSADEGreat campaign
CRUSADEConversion attempt involving a Hail Mary?
CRUSADEFight for change
CRUSADEConcerted campaign
CRUSADEMovement for the zealous
CRUSADEAggressive campaign
crusadeany of the military expeditions undertaken by Christian powers in the 11th, 12th, and 13th centuries to win the Holy Land from the Muslims
crusaderemedial enterprise undertaken with zeal and enthusiasm
crusadeto engage in a holy war
CRUSADEThe first one began in 1095
CRUSADEReligious war
CRUSADEAggressive movement
CRUSADEFervent endeavor
CRUSADEGung-ho campaign
CRUSADETireless campaign
CRUSADEHoly war
CRUSADEExtensive campaign
CRUSADEFight for a cause
CRUSADECause
CRUSADECampaign
CRUSADECampaign for a cause
CRUSADEPapal war
CRUSADEVigorous movement
CRUSADEMajor cause
CRUSADEVigorous campaign
CRUSADEMission of a sort