How could so many men have enough food to eat during such a long winter in England? How could livestock be kept alive? Perhaps the battle deaths were in lieu of starvation. The survivors didn't have to share dinner with quite so many other hungry mouths.
The builds of these skeletons are said to be larger and burlier than the usual surviving human remains from the period, which means they probably didn't have to wait in line at the buffet table. ;') "I'll take that, peasant!"
In those times, often whole villages (animals,women and children) moved with the army/fighters and were encamped somewhere close in the region.