Why did more civilians then solders die in the world war 11?

The Germans had an organized program for murdering civilians, slaughtering 12 million or so in their camps, and more millions in Poland, Russia and eastern Europe, without bothering to send them to camps. The Japanese were likewise very brutal in the nations they occupied, but never got to the point of applying industrial principles to exterminate the populations like Germany did. The Americans and the British killed probably another couple of million civilians with aerial bombing campaigns against the cities of Germany and Japan, following the German example previously set by the bombardment of British and European cities during the blitz. Many merchant ships were sunk, with civilian crews, and occasionally a passenger ship with civilian passengers, by submarines of Germany, Japan, the US, Britain. Japan also engaged in bacteriological warfare "experiments" against the population of China. The Germans were fond of their policy of "10 for 1" - if the local resistance fighters killed one German soldier ten civilians would promptly be put in front of a wall and shot. German troops were also prone to indulge in massacres of civilians, in France and Italy.