Why is n't it possible to describe the battle without any dispute ?
The mention of the " battle wagons " is very probably an anachronism , they were employed , without any success , years before the Battle of Legnano of 1176 took place , by a " Mastro Guitelmo " a milanese Guild - master and magistrate in a previous battle fought in the lands between Rho and Legnano in 1160 AD .