Final answer:
The main goal of the D-Day invasion was to force Germany to fight on two fronts and relieve pressure on the Soviet Union.
Step-by-step explanation:
The main goal of the D-Day invasion was to force Germany to fight on two fronts. The invasion, which took place on June 6, 1944, involved Allied forces storming the beaches of northern France, specifically the Normandy coast. The goal was to establish beachheads and divert German forces from the eastern front, relieving pressure on the Soviet Union.