There were few bunkers when landing on the beach during World War II. Why not throw iron bunkers on the beach to facilitate landing?

The turning point of the European battlefield in World War II was the Normandy landing. The reason why the Allies didn't throw iron bunkers on the beach is actually very simple: First of all, the iron bunkers are very heavy, and it is difficult for planes to drop them accurately. Secondly, the Germans have arranged a large number of anti-landing devices on the beach in advance, so it is difficult for chariots to land, so there is no way to arrange these bunkers through chariots. Finally, these bunkers are actually of little use, because the Germans in charge of beach defense have heavy artillery, and these iron bunkers can't play a role at all.

First of all, the first reason is that the iron bunker itself is very heavy and manpower cannot carry it. It can only be airdropped by plane or carried by chariot, but at that time, the Germans not only arranged heavy artillery on the beach, but also had a large number of air defense bunkers, so if the plane was airdropped, it would be easily shot down, causing greater losses. What's more, these iron bunkers can't accompany the combatants to charge.

Second, the chariot could not land. The reason why the Allies chose to land first with flesh-and-blood infantry is very simple, because the Germans arranged a large number of anti-landing devices on the beach, such as the famous Dragon Tooth anti-tank cone, so that a large number of Allied tanks can be easily reimbursed in the sea. So the Allies decided to occupy and clear German artillery positions with infantry first, and then let armored troops land.

Finally, even if these iron bunkers are really used, the effect is useless. We know that during World War II, the thickness of the front armor of allied tanks reached 5 to 6 centimeters, which could not resist the attack of German artillery. If these iron bunkers want to play a role, the minimum thickness should reach 10cm, which is impossible to build. What's more, the heavy iron bunker can't attack with the infantry. When the infantry charged, they were still exposed to German machine gun fire.