[Carl W.]

Reminded again of this by a recent bauernwehr reproduction post, but I didn't want to ask there & maybe distract from that (or similar) topic.

I like those knives, a lot, but I still don't like or understand nagels. To me they look (both functionally & visually) like small tacked on afterthoughts. As far as I can recall seeing they are not present on ~similar Khyber knives, nor on Bowie knives, or seaxes, or any of the various dagger types, or... ?

Functionally most simple sword guards (or say an S guard Bowie) are in the same plane as the blade, not perpendicular. If a perpendicular guard is a good idea, why so small? And why not on both sides? And if such a good idea why don't more/other types of knives have them?

I have done searches in past but little has been said about nagels that I could find. Thanks in advance for helping me learn about & appreciate them.

[Johannes Zenker]

Almost everything we "know" about the purpose of certain features of historical arms is inferred from manuals on their use, practical experience or deduction based on physics. As such, we can only guesstimate what the actual rationale behind those features was back in the day.

As for Messer and Bauernwehren with their Nagel, we have several possible answers, these are my deductions:

The perpendicular nature of the Nagel may have originally been construction based. Many Messer and Bauernwehren are assembled not from the pommel end, but by sliding the guard down the blade, where it is then not friction/press fit in place, but held there by a peg/pin that runs perpendicular through the blade, as is the case with knife handles to this day. Extending that peg creates an additional handguard element without requiring alterations to the construction method.
Several techniques like Pnemen are greatly facilitated by the Nagel, which begs the question which came first.

The rather diminutive size and one-sided nature likely come down to comfort. Any defensive implement spends most of its life, ideally all of its life, not being used but being carried/worn. A smaller, shorter, narrower implement is more comfortable to wear, which is why people often carry compact or even subcompact handguns rather than full size duty guns (or even rifles) as EDC (where permissible). Having the Nagel protude on both sides would also wear through clothing rather quickly and rub against the body uncomfortably unless worn entirely differently. That's also why we see spadroons and sabers with asymmetric and folding guards later on.

Why is it not on other weapons? Now this is a question that is nigh impossible to answer, but taking a shot in the dark, it may have to do with the way the knives in question are assembled. Bowies vary considerably in construction method, from full-width tang slab sided pieces that would likely be conducive to having a Nagel, to cable tang pieces that don't actually have the blade run all the way to the end. Seaxes, to my knowledge, usually use much narrower tangs, as do some bowies, which is probably not as conducive to punching a hole and putting a lever that *will* receive stress in use through it.

[Victor R.]

[Mark Millman]

Dear Carl W.,

[Dan Kary]

Don't some messer techniques (and probably bauernwehr too) require you to put your thumb up the blade for control? This couldn't happen with nagels on both sides. Furthermore, I think that if your thumb is up the side of the blade, the blade protects the thumb. You're supposed to parry using the nagel side and if you're parrying from a strike comming to your left then you twist the bade (so the edge is pointing backwards). This is, in the case of the bauernwehr, unlike some sword techniques where you parry with the edge (using the cross guard for hand protection) rather than with the flat (although with many messers you can do both since it has a cross guard and a nagel). I hope I've got that right! (I'm sure I'll be corrected if I am wrong...).

[Johannes Zenker]

[Gregg Sobocinski]

Not historical, but I have read that when modern kitchen knives are used in “crimes of passion”, the wielder’s hand rides up the blade quite often. Since crossguards don’t fit conveniently with knife construction, the nagel might be an easily integrated hand-stop.