sentences:  It has recently been suggested, based on research, that Ingersoll may have been the originator, chief advocate and mission planner of the tactical deception unit formed by the US Army during the war and deployed in the European Theater of Operations known formally as the 23rd Headquarters Special Troops and colloquially as the Ghost Army of World War II.In the 1950s Ingersoll acquired and managed several newspapers.His company, Ingersoll Publications, founded in 1957, was taken over by his son Ralph M. Ingersoll Jr. in 1982 after he had bought his father out in a deal that left them no longer on speaking terms.