The D-Day invasion was given the codename Operation Overlord. Operation Overlord was the result of over 2 years of planning. Before D-Day the allies did many things to make Germany think that the main invasion would be at other places in France. The things they did to trick them included fake radio transmissions, fake armies, and fake equipment. The allies used Operation Fortitude to trick the Germans into thinking the invasion would happen in an area that was the shortest distance between Britain and France. Operation Fortitude was the creation of fake armies and equipment to distract the Germans. It took the Americans and their allies two years to prepare for D-Day. To prepare for the invasion Americans sent supplies and weapons to
