Why is it so hard to get correct estimates of casualties during war?

A. many soldiers got buried in trenches before they were counted
B. not every country keeps records of the fallen
C. countries underestimated their fallen to confuse their enemy
D. records often get lost during wartime

E. It can be difficult to accurately account for casualties due to the chaotic and unpredictable nature of warfare, with many deaths occurring in remote or inaccessible locations. Additionally, the fog of war can lead to confusion and misinformation about casualties.