Having previously fought in World War I, an unnamed sergeant now leads soldiers of the U.S. First Infantry Division through World War II. His men include conflicted marksman Pvt. Griff, pulp novel writer Pvt. Zab, Sicilian Pvt. Vinci and medic Pvt. Johnson . The soldiers adapt to the hardships of war as they see conflict in North Africa and Sicily, take part in the D-Day landings, and liberate a Nazi concentration camp.