What is the D-Day

The "D-Day" is a military term use to refer  the start of any combat operation and / or attack. Popularly  the D-Day is refer to the 6 of June of 1944, opening day of Operation Overlord; warfare operation that took place during the 2nd World War on the beaches of Normandy. This attack was for the  attack, invade and liberate France and Europe German control.

The terms D-Day and H-Hour are terms used when a day or time of an attack is still not give or when it is in secret, and these must be unique for all participating units.

The original  Day of the Normandy attack was the 5 of June of  1944, but poor weather and sea, causing a change for the 6 of June, giving more time to rehearse the attack acts Because this latter date is popularly known as the small D-Day