— Answer —

1. What was the code name of the battle?

: The code name of the battle was Operation Overlord.

2. What was the name of the operation that put the end of the battle?

: The name of the operation that put of the battle was Operation Cobra.

3. What is meant by D-Day?

: The first day of The Battle of Normandy, on June 6th 1944.

4. How did the invasion begin?

: The Normandy Invasion began with overnight parachute and glider landings, massive air attacks, naval bombardments, and an early morning amphibious phase.

5. Who was the enemy of the Allied Forces?

: Nazi Germany.