I'm about halfway through Dan Carlin's Hardcore Histories podcast. Episodes 50 to 53 cover WW1. It's a brilliant telling of the major events of WW1 from Carlin who admits he's not a historian. He tells us of tens of thousands of people dying in single days of the combat, especially at Ypres and Flanders etc. He mentioned that on Christmas 1914, when the Germans and Allies decide to not kill each other for a short while, one of the first things people do is try to bury some of the bodies that are rotting. Apparently the stench is so bad that soldiers can smell the battlefield before they can see it.

My question is, what happened to all those bodies after the war? Did people go out and bury them? Or were they just left to rot? Are there any reports/evidence of disease that spread due to soldiers essentially living with dead bodies for extended periods of time during the extremes of the trench war?