Bernard S. C. McElroy was born August 18, 1899, at New Kensington, Pennsylvania.

Prior to his enlistment with the Constabulary, he served with Company B, 604th U.S. Engineers from April 7, 1918, to June 27, 1919. He enlisted with the Constabulary on January 1, 1923, and was assigned to Troop D, Butler.

On December 20, 1924, while on motorcycle patrol, McElroy collided with a passenger car in the city of New Castle. He was seriously injured and was taken to the New Castle Hospital where he died the following day.

McElroy was buried in the Rose Hill Cemetery, Butler. He was survived by his mother, Mrs. Jennie E. McElroy, of New Kensington. McElroy, 25, completed 2 years of Constabulary service.