Top secret documents from D-Day invasions were found in the boot of an old Ford Escort and donated to a museum.<br /><br />Maps and planning documents detailing top-secret plans were donated to House on the Hill museum.<br /><br />The documents relate to the allied 'Gold Beach' invasion, part of the Normandy landings on June 6, 1944.<br /><br />The landings saw allied forces invade German-occupied France in five areas of Normandy to regain control.<br /><br />Gold, the central of the five areas, was located between Port-en-Bessin on the west and the Lieu-dit La Rivière in Ver-sur-Mer on the east. <br /><br />The documents were hidden for 80 years after the war inside a suitcase in an old Ford Escort.<br /><br />The haul even contained secret off shore photos taken from a mini submarine by British special forces, and was only to be seen by high-ranking officials.<br /><br />One of the documents is addressed to "Soldiers, Sailors and Airmen of the Allied Expeditionary Force!"<br /><br />It reads: "You are about to embark upon the Great Crusade, toward which we have striven these many months.<br /><br />"The eyes of the world are upon you."<br /><br />It warns: "The task will not be an easy one. Your enemy is well trained, well equipped and battle-hardened. He will fight savagely."<br /><br />The maps - due to their age and rarity - are estimated to be worth around £3,000.<br /><br />They are on display in the D-Day exhibition at House on the Hill Toy Museum in Standsted Mountfitchet, Essex.