Why weren’t swords more commonly used in WW2?

Even back then, most knew better than to bring a knife to a gunfight.

The equivalent of the sword was fixed bayonets, attached to the rifle.

A soldier could kill more people with a gun than with a sword.  Further, if a person is aiming a gun at him, charging with a sword is not a bright idea.

They were as my great granddad stole one off of a dead soldier, They were even of that time obsolete, someone could get shot charging at somebody by a sword.

Swords were designed for hand to hand combat. By WW2 the weapons had become so sophisticated, soldiers died trying to get that close.

Guns are more powerful weapons.

Because more advanced weapons had been invented.

They were not much use against bullets.

Bullets travel further.

The bayonet was a more versatile stabbing and (to a lesser extent) cutting implement because it was an attachment to a rifle - a much more lethal bit of kit.