Most casualties caused by artillery
Charles Biggio has done some research to find out what American weapons caused the greatest number of casualties.
After some digging, he said Danny Parker provided the answer in an unpublished essay called "The Experience of Battle."
Parker reports that in WWII artillery caused the most casualties of war in Europe. U.S. Army Medical Corps statistics show that 63 percent of casualties in mixed terrain were from shell fire. Twenty-five percent came from bullets, two percent from grenades, one percent from mines. The 3rd U.S. Army's AAR confirms these figures. It shows 60 percent of casualties ere from artillery shells and mortars, 25 percent from gunshots. Moreover, artillery was reported to be the weapon most feared by U.S. infantrymen.