Cleveland Grays Marching in 1915 ID: 2569 | This file appears in: Grays Armory While marching in parade formation, the Cleveland Grays would be led by Pioneers. To qualify as a Pioneer, one had to be at least six feet tall. Image Courtesy of Cleveland State University. Michael Schwartz Library. Special Collections. Download Original File "Cleveland Grays Marching in 1915" appears in: Grays Armory