 Complete the following phrase:  Accounts differ, but Burke enlisted with 15th Regiment of the New York State Volunteers N.Y.S.V. on the 17 June 1861, and is in the roster titled Fifteenth engineers among those published in 1893 and 1905. The 15th N.Y.S.V. received instruction in army engineering they were known as sappers at Alexandria, Virginia and were associated with works like trenches, barriers, bridges etc. around various engagements including Yorktown, Gettysburg and 