D-Day

Over 170,000 men survived the beach landings, Glider landings and parachuting in.

Operation Overlord was the code name for the Battle of Normandy, commonly referred to as 'D' Day.

I've heard as much as 50% casualities with airborne forces was expected.

probably Omaha...

code name was: OVERLORD

Because it was the largest invasion ever, almost 180,000 troops and their support vehicles and cargoes arrived on the first day alone.

General Eisenhower was quoted saying that.

The D-Day invasion of Normandy could not have happened without the US. America supplied millions of troops, many ships, aircraft and weapons.

Heavy German machine guns and mortar fire...

Patton was given command of a fake army to confuse German spies as to where the invasion was going to take place. Patton's intent was to make them think of Calais as the target. It apparently worked as the Germans strengthened troops in Calais area.

24 hours = 1 day
48 hours = 2 days
72 hours = 3 days

(1 PM Friday) + (3 days) = 1 PM Monday

D-day was the code name chosen for the invasion of France by the Allies during WWII. It meant the day that the invasion operation was to take place. The following days would be D-day plus one, D-day plus two, and so on.

You would really have to re-define that question to get an answer you want.
On D-Day itself, 6th June 1944, 1,465 American troops lost their lives. D-Day was ONLY the 6th June. Subsequent days were known as D+1, D+2 and so on. The beaches were used for continued landings for almost a month before European ports came into use. Each day more American servicemen lost their lives, but this was not strictly D-Day if it happened after 6 June.

Admiral Sir Bertram Ramsay was a senior officer in the Royal Navy who was Allied Naval Commander for the invasion of Normandy.

Normandy

the allied invasion at Normandy, France

lack of fuel and heavy loss of aircraft......

The invasion was named Operation Overlord.

German..

it put allied force back in Europe in order to attack and defeat German forces

D-Day was the military code name for the first day of the invasion of Normandy during WW 2. -This first day was a vital part of Operation Overlord, to re-establish freedom in Europe. On D-Day the Allies managed to land over 170,000 soldiers with thousands of vehicles and supplies. This continued on a lesser scale for almost 4 months.

By mid 1944 the Luftwaffe had been severely reduced by Allied bombing attacks on airfields, aircraft production factories and refineries. By June the Luftwaffe was extremely low on aircraft, parts and aviation gas.

He announced that the allied invasion of France had begun.

D day was fought in Normandy and started when the Americans had stormed Normandy beach.