As with the never-ending search for the “real SEAL knife,” many readers don’t seem willing to accept the fact that the primary U.S. Army-issue combat knife is the common M-9 bayonet. One “knife bayonet” or another has been the basic combat blade of our army since 1894 and the Krag Jorgensen rifle.
To be truthful, many of these knife bayonets were not ground to a functional cutting edge by the manufacturers and were next to useless as hand-held tools. The situation improved some with the M-5, M-6 and M-7 series of bayonets, but all of these were still more spear point than knife. It was with the introduction of the M-9 that the army first tried to design a weapon that was a multi-purpose knife first and a bayonet second.