Original U.S. WWI Model 1918 Mark I Trench Knife by AU LION & Steel Scabbard with Added Belt Clip Ordnance and an overall length of

and an overall length of 26 1/2 inches

but also was the first to exceed Mach 2

Bulova supplied watches for the US Army

A radio operator-gunner

Original U.S. WWI Model 1918 Mark I Trench Knife by AU LION & Steel Scabbard with Added Belt Clip Ordnance and an overall length ofOriginal 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.