If you need any particular questions about European swordsmanship answered, don't hesitate to ask me. I know it's not 100% relevant to this, but if extra knowledge would contribute, then I'm happy to help.
Aside from that, one idea is to write some parts of the fight in retrospect. I find this can be really effective and really accurate
. Sometimes you miss things in a fight and piece it together afterwards via the evidence. You wake up the next morning and have a bruise? Must've been last night's fight, even though you don't remember even getting hit. The Lord of the Rings
does this pretty well, and it goes further by implying things rather than outright stating them. Boromir's final battle was done this way, and not a speck of the action was described in literal terms. This is the information we get:
- He was blowing the horn.
- The horn was split.
- His sword was broken.
- He was pierced by many arrows.
By implication, we can infer that Boromir fought, and his sword was broken. He continued fighting, despite being pelted by arrows, and killed Orcs with his bare hands. At some point, the horn he was using was split; whether it was chance, the hewing of Orcs or something else is left up to the reader. Or perhaps not. Who knows?
Don't forget to keep the emotions of the characters in mind, too. Anger could cause someone to fight recklessly, or it could build resolution in them and cause them to fight with greater efficiency and initiative. Despair could cause them to lose all hope or need for survival, causing them to take risks that adversaries might not see coming. An inspired fighter might do much the same thing for different reasons. Someone who's afraid might lash out and fight with bestial aggression when pushed.