"Last days of the nasal helmet? " Topic

So I'm half planning a 3rd crusade project with 1st crops/curteys figure.
But there is a lot of cool stuff happening in the first 1st 20 years if the 13th century. (1st barons war, Anglo-French war ect) would it kosher to use nasal helmet infantry for those wars or was the kettle quite prominent by that time?

I would.

Still lots of nasal helmets then.

The helmet shape itself changes, long before the nasal disappears. In the late 12th century the sugar loaf or flat top shape predominates, at least in England. The acorn shape continues but without the crossed bands and the helmet is a one piece. Of course, one piece helmets had always been around, but later they became more common and thus cheaper. The nasal gets replaced by the face plate, which morphs into the great helm by the end of the 13th century.

link Lots of nasal helms in the Maciejowski Bible (mid 13th century), along with the other helmets mentioned, including early great helms………..

As infantry, yes. Mounted troops would have had the better gear, wealthy knights with the latest tech, then hedge knights, Squires, sergeants getting by with either old gear or stuff that was less demanding to make.

Much the same with infantry, Dismounted knights and sergeants with the same gear they rode in, house hold troops with newer gear and as you work your way down the wealth scale less gear and older patterns that could be made by less skilled smiths.