Perhaps one of the best-known features in DC's Star Spangled War Stories was The Unknown Soldier.
There had previously been mentions of an "Unknown Soldier" in places like Our Army at War #168 (June 1966),
but the character was first billed as a regular feature starting with Star Spangled War Stories #151 (June-July 1970).
That would continue until issue #204 (February-March 1977), and starting with #205, the name of the book changed to Unknown Soldier.
Issue #268 (October 1982) would be the final of that run.
from Who's Who: The Definitive Directory of the DC Universe Vol. XXV (March 1987)