Yes, that crazy shaped knife you’ve seen online that is labeled a combat knife is not really field tested–maybe in the designer’s fantasy world it is!
Do you want a REAL fighting knife or a poser fighting knife? First off, you should make sure that the knife you are buying complies with uniform standards.
These are knives used by actual soldiers and marines in combat.The difference between these knives versus other “fighting knives” is that they are field tested.The only downside to this is that it is more costly than the other two choices. You can go for the classic leather sheath or a synthetic sheath.The leather ones are quite slick but won’t do well in high moisture climates.The reason why the Army decided to use 420 stainless was that carbon steel is too brittle for bayonet use.
Also, the sharpness doesn’t really matter for bayonetting since the primary action is stabbing, not slashing.
Also, since you can attach your knife to your webbing, it just makes more sense to get a fixed blade–you can get some really long fixed blades whereas folders are limited in blade length.
Many people wonder about what steel they should pick for a combat knife.
You have basically three options: stainless steel, carbon steel, or a hybrid. It also allows you to sharpen it easily and it can withstand a lot of abuse without cracking.
Carbon steel holds an edge for a very long time but can chip under heavy use. There are also high carbon stainless steels that give you the best of both worlds. You can cut yourself reaching for your knife or, even worse, lose your knife during a march.
Are you a soldier looking for a nice tactical knife to attach to your belt?