Nineteen .45-caliber cartridges buried in northeastern France may mark the spot where Sgt. Alvin York became America's most celebrated soldier of World War I, a research team said Thursday.

The Sergeant York Discovery Expedition said that after four years of work, it found the cartridges buried 2 to 4 inches in soil near the village of Chatel-Chehery where York single-handedly took out a nest of German machine guns.