If you fight and die, it will not matter. You will always go to heaven.
In the middle ages, they were very disgusting. They didn't really care if the streets were clean. They also dumped poop and pee on the streets. They rarely took showers.
Many people died from the plaque. It spread like wildfire. Basically everyone died. It was caused by a disease that was caried by fleas.
100 Years of War
Everyone went to fight in wars because they thought that if they died they will go staight to heaven.
Weapons used in war
Many people died in wars because they mostly died of wanting to go to heaven. In the small towns a lot of people died of the bubos and not that many people fought in the wars. More and more the Feudalism pyramid stated to collapse.
These wars lasted up to 100 years nonstop and more and more people joined.
THey used longbows as their best weapon and the others could not compete.