Original U.S. WWI Model 1918 Mark I Trench Knife by L.F. & C. with Steel Scabbard in Excellent Condition British Bayonets The instrument itself in inscribed

The instrument itself in inscribed CAPT

The question seems to have been answered in a secret 1943 report on what was needed by the Philippine Resistance to carry on under Japanese occupation:

Barrel marking faintly reads ADDRESS COL

The Leuchtpistol 34 has an aluminum alloy frame and barrel with steel moving components

The throat is the thicker style and is held in place by double screws

Original U.S. WWI Model 1918 Mark I Trench Knife by L.F. & C. with Steel Scabbard in Excellent Condition British Bayonets The instrument itself in inscribedOriginal Item: Only One Available. The U. S. Model 1918 Mark I Trench Knife was the second major "Knuckle Knife" to be officially adopted and issued to the US military. It was developed for use in the horrific trench warfare that typified the stalemate on the Western Front during the latter part of World War One and saw use not only there, but during World War Two as well. The knife was manufactured in the United States by Henry Disston & Sons (H. D.