You may want to check some of the dates in your info. You have him entering the Spanish American War at 16 (1898). You have him getting out at 18 (assumed to be 1900), and then re-enlisted at 18 for WWI (with most Americans enlisting in 1917, though some did enlist for service in other countries earlier, but not earlier than 1914). There is a descrepancy or 14 to 17 years. If he was 18 in 1917, for instance, he could not have served in the Spanish American War.