When I was a kid (45 years ago) my dad gave me a US military sheath knife, it is marked, "USM8 BMCO". I abused that knife for decades, for throwing, hunting fossils, playing mumblypeg with brave friends and everything you can imagine that a knife could be used for while camping. It never failed me and I still have it. Here's my question, this knife seems to be made of softer steel than most (like the new Glock sheath knives) it dulls quick it sharpens quick. Are these military knives made of a more non-brittle steel in order to keep the blade from breaking during hard use? Is this a part of the design of the field knife?