What Makes A Knife A "Fighting Knife"?

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I just saw a discussion on another forum about why the Benchmade Infidel is the finest fighting knife ever. A lot of the people responding are saying it's not a fighting knife at all and the very first thing that most of them are saying disqualifies it is that it's not a FIXED BLADE knife, which absolutely makes sense to me. I would not want to get in a knife fight with a folding blade knife.

I have zero experience with knife fighting but when I think of a "fighting knife" I think of an actual James Bowie design Bowie knife.

I seem to remember that a lot of people carried the Buck 119 in Vietnam. None of them that I am aware of ever said they actually got in a fight with that knife but it is kind of that Bowie pattern.

So for those of you who have more experience in this field than I do what features would you look for in an actual fighting knife?
 
what features would you look for in an actual fighting knife?

First define "fighting". Dueling used to be common before the 1900s and there were knives designed for that purpose. In some cultures fighting with a knife was common enough that folders like the navajha were carried and desinged for fighting, defense and attack. Military fighting knives have existed for many years. But they tend to be different with some common traits.

Edge and a half/sharpened clip; Usually a guard of some size; Longer than a working knife to reach organs and deep major arteries,...
 
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If you can kill a hog with a flint knife, then does that make it a fighting knife?

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Hog hunting Caveman style!

Have to wonder how many more cooking careers were ended with one of these

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than men killed in combat with a "fighting knife"

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Randall had a small room, connected to the sales room, full of old stuff and letters from service men describing various situations in which a Randall knife was used in anger. It had to be good for sales.

Sammy claimed to have killed a Japanese solider attempting to bayonet him, on Iwo Jima, with this knife

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Sammy showed me the still existing bayonet wound in his left arm and side, where the bayoneteer had got him with the long bayonet on his Arisaka. That left Sammy's right side free to stab the Japanese solider with his right hand.

Sammy also left me feel the bump on his head where Japanese bayoneteer #2 hit his with his rifle butt, stunning Sammy and knocking him down. When I asked why he was not dead, Sammy said "those Marines over there got him"

This is an extremely rare Vietnam special forces type knife

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Notice: no markings!

My bud Danny Boy, with whom I bunked with at Camp Perry, was issued this thing in Vietnam and never liked it. This is his second, the first broke its tip cutting saw grass. So, Danny Boy, who was Special Forces imbedded with the Hmong Vietnamese, carried this Kabar

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because it would slice the bread in a type C rations can.

So, is the second a fighting knife? Danny Boy claimed it would put a real hurt on someone.

The Hmong were given to believe that once they helped the Americans beat the North Vietnamese, that America would help them to create their own country, independent of South Vietnam. Of course, not only did that not happen, it would not have happened. The US just lied to them to get them to use their knowledge of the area, and guerrilla tactics, to fight the North Vietnamese. Danny described an intelligence probe where he was the only American with a group of 200 Hmong. No South Vietnamese were along for the recon.
 
There are some very nice knives pictured above.

My thoughts on a true fighting knife is that it needs to be 9-11 inches long, distally tapered, balanced at or just in front of the guard, and weigh in the ballpark of 14-17 ounces. It should have a guard to protect the hand and fingers. It will of course have a bowie style profile. The handle should be easy to grip, with no pain points or potential pinch points, and allow the change of grip as needed for various maneuvers. The blade should be a differentially heat treated carbon steel.

Shorter knives have a reach and speed disadvantage, as a longer blade can cover distance much quicker with the tip than a shorter blade, and has more leverage to deliver power.

The distal tapering allows the balance to remain close to the hand, so it remains a quick knife. A tip heavy knife is good for chopping, but slow in movement. A knife with too much weight in the hand versus the blade is wasting potential power.

The bowie style profile allows one to do multiple cuts to take advantage of your opponents stance. It can stab like a dagger, chop like a kukri, and tear like a hawksbill. I'll leave it to you to research what I mean by these things.

The differentially heat treated carbon steel can absorb shock without being brittle, but take and maintain a strong and hard edge.
 
Randall had a small room, connected to the sales room, full of old stuff and letters from service men describing various situations in which a Randall knife was used in anger.

Been there. I'd say fear more than anger (unless "used in anger" is the typical euphemism).

A "fighting knife" is the one you have with you when and if that situation ever arises.
If you can kill a hog with a flint knife, then does that make it a fighting knife?

That's not what they're talking about. Purpose designed and built for killing opponents as opposed to tool that was at hand when the need arose. I'd opine the example of the broken tip on the MACV-SOG knife is an illustration of how the purpose built fighter is different than a utility knife since it didn't withstand EDC tool use.
 
Whatever you can wield confidently. I think a combat knife can be any lentgh, but must include at least 1 finger groove and a bone cutter, and definitely has to be fixed blade.
 
With a bit of experience, I believe large chopping knives are the quickest blade to end a fight. Here's the shortest blade I think has that chopping ability.

As hso points out, what's a "knife fight"? Only a fool would get into a knife duel. OTOH, a small blade may be the perfect choice if an aggressor is choking you unconscious. Is that, then, a "knife fight"? Is that small blade a "fighting knife"?

Here's a pic of an ARK trainer, and a compact combat knife I'm working on. What does that mean? It means use against people is its primary function, but because we live in reality, we understand that it is a secondary or tertiary weapon. It must therefore be small and compact enough to not interfere with the primary and secondary weapons, which will be the choice to engage with 99.999% of the time.

John
 
That's for sneaking up behind somebody and cutting cutting their throat.
Nope. You're thinking of the Sykes - Fairbairn. A rather delicate tipped dagger commonly taught to silence sentries.
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The Ek "pig sticker" was a purpose built fighting dagger that was made and sold to US soldiers in WWII, Korea, Vietnam, etc. It is a more robust dagger primarily intended for stabbing.
 
It's a stabbing knife with no protection for the user when he stabs with it.

Are you familiar with the story about John Ek going before the war-time materials board to argue for steel to make his knives for US troops?

When his sticker was criticized for lacking a guard he poured oil on his hand and the handle then repeatedly stabbed it into the table to demonstrate that his hand wouldn't slip onto the blade even covered with oil. The board approved his request for steel after witnessing the demonstration.

While many of John Ek's designs incorporated a swell towards the ricasso and some incorporated a small guard, his early knives saw combat without a guard and worked well in that use.
 
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