There were approximately 9 Million fatalities during World War I. However, there were also approximately 23 Million wounded or missing, bringing the total number of casualties to about 32 Million. Russia suffered the most casualties with approximately 6.7 Million either dead or wounded. These statistics reflect only military casualties as there are no reliable figures on civilian casualties during World War I.
Edith Cavell was celebrated for saving the lives of soldiers from both sides without discrimination, but when she helped some 200 Allied soldiers escape from German-occupied Belgium during the First World War, she was arrested, accused of treason, found guilty by a court-martial and sentenced to death. Despite international pressure for mercy, she was shot by a German firing squad.