system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why did WW2 Allied soldiers not use shields?

It seems like shields would have been especially helpful in situations like the Normandy invasion, since they were pretty much walking right into gunfire, right? Even if the shields didn't protect the soldiers from all the bullets/etc, wouldn't they have helped enough to be worth using?
gpt
As 1mfa0 said, a sufficiently thick shield would be extremely heavy to carry. So you'd probably have to provide some sort of motor to move it. And since it's not economical to provide one for every soldier, so you'd be better off making bigger shields that multiple soldiers can use together. And since you've got a motor, you can move quite a bit faster than on foot, so you'll want to have a group of these shield-vehicles moving together. And since a motorized shield-vehicle can carry so much more weight, you could have the soldiers use guns that are far larger and heavier than their normal guns. It will be big and expensive, but impervious to normal bullets, relatively fast, and pack a lot of firepower. Maybe you'd call your new army an Armored Division, and your new mobile shields "tanks"