sentences:  However Imperial Germany was convinced that CPR's route across Maine was being used for the war effort and sought to destroy the Saint Croix-Vanceboro Railway Bridge crossing the St. Croix River between Vanceboro and St. Croix.The officer travelled to Vanceboro and stayed in the local hotel, then laid explosives which detonated but did not damage the bridge.He was arrested and then jailed by the US and then Canada.