This medal was awarded to volunteers from the state of New York who served in the Spanish American War and also part of the Philippine American War. Apparently, the medal was given to all volunteers, including army and naval militia.
The obverse of the medal shows the army volunteer, in full gear, advancing on the foe. The reverse reads "Awarded by the State of New York To One Who Served the Nation With Honor 1898-1899-1900."
This particular medal was awarded to Hjalmar P. Delin (1876-1951) who
later served in World War I and became an Ensign; then , to old for the
Navy, served in the Merchant Marine as a first mate in World War
II. He is buried in Pinelawn Cemetery, Long Island, NY.