Daylight Bombing vs Night Bombing
In WWII There was a debate on the best time to deliver ordinance. At night casualties would be lower, but at day munitions could be dropped more accurately. The British went with night bombing as their early war causalities were atrocious. But then the Americans joined. The American bombers were equipped with something called a Norden bomb sight. This was the most advanced bomber sight ever designed. It allowed bombers to target and destroy targets with pinpoint accuracy. But these bomb sights couldn't be used at night. You cannot target what you cant see. The British worked around this with fire munitions. But American commanders were not willing to take the hit in accuracy. So they gathered massive swarms of bombers that were armed to the teeth with guns. Unfortunately this was not enough to deter the German Luftwaffe. Causalities were astronomical. The commanders knew they needed to protect the bombers if they were to keep up the campaign. The solution they found was the P-5