Armatus is latin for armed, armoured, and/or fortified. I would lean towards incorporating some form of medieval armour, though a medieval weapon or fortification could work too.
I do not want any armour or weaponry to look "fantasy" like. Reasonably historical would be greatly preferred.
Colours for the logo are fine, but a black and white version of the logo should look good as well.
It would also be desirable for the logo or a simplified version to work as a stencil or laser cut sheet.
I would like some sort of image/shape/pictorial element incorporated into the logo, just initials without any image/shape/pictorial element either incorporated in them of accompanying them might be a little plain.
The image below is just a round shield with a letter on it. The logo does not need to be anything like that though, just an idea.