Sword ping!
I wonder if there are any existing Roman fighting manuals? I haven’t heard of any. I would expect, though, just by virtue of it’s size, shape, and the limitations of body mechanics, that fighting with the gladius would have been similar to (or at least an earlier expression of) the later medieval “I.33” or the “Walpurgis” manual, which dealt with the single-hand shortsword and a buckler.