How dare you say that English is not your first language! You speak it better than at least 70% of English and 100% better than any American! Seriously, I had no idea until the end of your post that you didn’t speak English as your native language (Coming from an Englishman).
As for the fighting, it will be realistic; however it is a hard mindset for soldiers (melee) to engage one person at the same time as you need to coordinate your attacks together well in order for them to work (Eg: striking left and right at the same time.) so it is extremely unlikely to happen in a fight. However, once your buddy has landed or his blow deflected, it is alot easier to then strike (working as a duel team, one strikes then the other etc… etc…). In my fighting style (with lance or sword) we always fight the opponent in front of our buddy to the sides of us while blocking attacks directly in front of us. This way it confuses the enemy who are advancing to where the strikes / hits are coming in while looking after ourselves in defence. We work as a single unit, looking out for eachother but letting them handle it themselves unless they look like they’re in trouble. We never step back or step forward either, we hold the line unless ordered to do otherwise. It’s real good fun and would recommend it to anyone who likes history and aren’t afraid of getting hit!
Regards,
Warrior Rose