More than 150,000 Allied troops from the U.S., Britain, Canada, Free France, and Norway made it ashore on D-Day– suffering some 12,000 casualties.
However, with the beachheads firmly secured, they kept coming.
The build-up of Omaha Beach. Reinforcements of men and equipment moving inland, D+2, 8 June 1944. Original caption: “Roadways appear as if by magic as long lines of men and materiel stream ashore at a beach in northern France. With the beach situation well under control, there is an increasing flow of troops and supplies to reinforce the units now in combat. 8 June 1944.” Note the heavy guns, mobile cranes, DUKWs, and other vehicles on the beach roads; the former German pillbox in the lower left; LCTs unloading at low tide; and shipping offshore. USS LCT-572 is at left, broached at the high tide line. Signal Corps Photo SC 193082
By the end of D+5, 11 June, more than 326,000 Allied troops had crossed the Channel, along with 50,000 vehicles and more than 100,000 tons of equipment.
Speaking to this immediate buildup, which would lead to the liberation of Paris by August, Pulitzer Prize winner Rick Atkinson has the excellent below program from the National WWII Museum (formerly the D-Day Museum). If you have a spare hour, it makes a good listen.