Spoiler Alert, click show to read: 
More casualties recovered is also realistic because not many fighters have died in battle, but simply lost your senses (for the fear or suffered a stroke).


And Romans got nailed sandals for the purpose to kill anyone lying on the floor.... they will mostly dies when trampled by many men wearing nailed sandals.....

Even without the nails, they will still be killed with sheer trample force.... remember the Rock concert?