Flanders Fields Driving Tour

A Belgian cemetery --the crosses on the Belgian Flag were apparently added later. My take is this was part of the Belgian Nationalist/Catholic movement. Some of the stones did not have the cross. This one without the cross was an unknown soldier.A British cemetery with 12,000 known and unknown bodies and a wall with names of 35,000 missing.
This was a huge crater from the blowing up of a munitions dump. Now called the Pond of Peace.
The soldiers were buried where they fell so small cemeteries are next to farms and fields.
There is still unexploded ordinance in the fields and occasional bodies are found in fields even from 90 years ago. Is that a corn stalk or a femur?