No, it will be called "Anduril" the sword of the king of Gondor.

Sry my LOTR is overtaking me.

Well... the sword being called Excalibur, not an impossible theory since the WH40k and WH (not quite sure about WH) share original world history.

Reminds me... It probably wouldn't work, but I'd like a 40k version of Brettonia.

The ecclesiarchy call that "Frateris militia".

I don't know what to say, other than that they're completely different in almost every possible way.

the pilot are medieval knight.

Yeah, but the look, play style, and lore is completely different.

You could make some mean roasted marshmallows with that blade would be a short cook time though, otherwise they might vaporize and then no marshmallows and that would make the s'mores much less awesome... S'MORE THE EMPEROR!

Well Bretonia is kinda garbage, As are Knights.