1927 Lambda Chi Alpha becomes an international fraternity with the installation of Epsilon-Epsilon at the University of Toronto. The practice of hazing is roundly condemned by Lambda Chi Alpha. First members inducted into the Order of Merit. The union of Theta Kappa Nu and Lambda Chi Alpha increases the chapter roll from 78 to 106 and the membership from 20,000 to 27,000. Lambda Chi Alpha purchases first headquarters building.
Many chapters are inactive due to military service.
The Annual Loyalty Fund campaign is established as a means for alumni to support the Fraternity beyond their college days. 1959 Fiftieth anniversary rededication ceremonies held. 1960 First members inducted into the Order of Achievement and Order of Interfraternity Service. 1961 Upsilon at Louisiana State University becomes the first chapter to initiate 1,000 members. 1967 Lambda Chi Alpha initiates its 100,000th member, the fifth fraternity to do so.