In January, 1916, during a meet at the New York Athletic Club, Vollmer broke the greater New York metropolitan record for the 100-yard swim with a time of 55.2 seconds. In an important achievement in his swimming career on February 17, 1916, he established what were then recorded as three world indoor swimming records on his way to winning the New York Metropolitan 220-yard swimming championship held at the New York Athletic Club. He set a new record for the 220-yard swim of 2:24.8, and a new record for the 200 meters, an established Olympic event, of 2:23.8. In WWI, Vollmer served as a U.S. Naval Lieutenant, first entering the service around May, 1917. For a period through 1918, while commissioned as an Ensign, he served as an instructor at the Pelham Bay School, a WWI error training center for seaman and officers, where he was able to continue his own training at facilities in Long Island Sound, and compete for his naval station, before returning to competitive swimming in civilian life. and was managed and trained by Hall of Fame Coach
Otto Wahle, a former Olympic medalist. A 1904 gold medalist in both swimming and water polo,
Joe Ruddy also served as a coach at the NYAC in both sports, while also competing in water polo in his earlier coaching years. In a summary of his accomplishments with water polo teams, he was part of the AAU Sr. National Championship Team for indoor competition in the years 1922, 1929, 1931, 1935-36, and in 1920 for the AAU indoor Jr. National Championship Team. In the New York area, in 1924, and 1927, he was part of the AAU Sr. Metropolitan Championship Team. ==1920-1924 Olympics==