Draft Registration Cards for WWI are just that; a registration for the Selective Service's Lottery for conscription into military service. When all three registration periods were completed most if not all men between the ages of 18 and 45 born between 1873 and 1900 (Even those born outside U.S. and not citizens), who were not already in the military had should have filed a card and not all who filed were "drafted" or conscripted into service by the Selective Service Lottery. Some filed a card and still volunteered. Even those who already had served in military, if not in active service filed a card.
Ancestry has a Historical Neswpaper Collection and it has "Nick J. Doss, of White Oak" being mentioned as amoung "Other members of the Bradley McCreery Camp..." in an article titled " Soldiering Was Rough Back In 1898, Aged Veterans Say" in the August 26th 1950 of the Beckley Post-Herald (Buckley, West Virginia)