The Battle of the Overpass was an attack by Ford Motor Company against the United Auto Workers (UAW) on May 26, 1937, at the River Rouge complex in Dearborn, Michigan. The UAW had recently organized workers at Ford's competitors, and planned to hand out leaflets at an overpass leading to the plant's main gate in view of many of the 90,000 employees. Before the UAW organizers could begin, they were attacked by Ford's "quasi-military" security service and the Dearborn police.