system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:The Normandy Beach landing

I'm no expert on military logistics so this is probably a stupid question, but here goes:

I don't mean to undermine the brutality of war, but nowadays we mostly hear about combat involving artillery strikes, long-distance sniping and IEDs, yet those tactics were still alive and well during WWII. I have the utmost respect for anyone who has to deal with these hellish situations, and I don't want to offend anyone, but sending hundreds of troops to knowingly charge into enemy fire without cover seems almost medieval by comparison. 

In other words: Why did the Allies invade Normandy so recklessly, and not use (ironically, I guess) "safer" methods?
gpt
They did it as safely as they could.  The problem was, the Nazi war machine could exploit the road network to move mechanized units quickly.  In order to succeed, they had to get a lot of troops on the beach quickly before the Nazis could call in major reinforcements (part of the plan was faking the Germans out by making it look like Patton was going to invade somewhere else entirely).  Given enough time, Germany could have called up a big pile of tanks and artillery from just about anywhere nearby in Europe to Normandy to make an invasion at that point impossible.  When the US began invading islands held by Japan, they could afford the luxury of standing off and initially bombarding the shore with battleships.  The US had air and naval superiority at that point, and there weren't any Autobahns between the islands.  A prolonged shore bombardment at Normandy would have given the Germans too much time to react.