You know those little boats

That they used in war to make d-day beach landing ? They speed up to the beach at about 5 miles an hour , then hit the beach, where the bad guys are waiting with real guns and when you hit the beach the damn door opens in the front. Who's idea was that? Did we buy some of our equipment from the Japs or the Germans? I've climbed over the side of a perfectly good, leak free ship down a cargo net with everything i own in a pack crammed in with as many as possible(and some got sea sick) I'm talking projectile sick. I mean the bad guys had to be chuckling like shooting fish in a barrel. Somewhere on that landing craft had to be a label that said made in Japan or powered by Volkswagen. Inquiring minds wanna know .