Arguably one of the most important military inventions of World War 2 was the proximity fuze. It greatly increased the lethality of artillery shells, since an airburst has a higher chance of covering trenches with shell fragments, and soldiers laying on the ground in as low a position as possible are more likely killed or injured by artillery shells exploding in the air because of the larger cross section when the shell explodes in the air. I would think that, since the invention of the proxi...
