8" Lugers with board stocks were standard issue to the machinegun squads in the "Assault Batalions" formed in 1918 on the Western front. Known then as Stoss Abteilung, latter as Sturmtruppen. Markings on the, field applied, front strap could be S Stoss A Abteilung I First Bataillon, 1 First Kompagnie, 36 Waffen #36.
Second man from the right has a pistol stock on his belt.
Attachment 40391