What is Operation Overlord?
{{citation style}} {{Infobox Military Conflict | conflict = Operation Overlord | partof = [[World War II]] | image = NormandySupply edit.jpg | caption = Tank landing ships unloading on Omaha Beach | date = 6 June – 30 August 1944 | place = [[Normandy]], France | result = Decisive Allied victory | combatant1 = {{flag|United States|1912}}<br />{{flag|United Kingdom}}<br />{{flag|Canada|1921}}<br />{{flagdeco|French Third Republic}} [[Provisional Government of the French Republic|France]]<br />{{flagcountry|Polish government-in-exile|1939}}<br />{{flag|Australia}}<br />{{flag|Belgium|state}}<br/>{{flagcountry|Dominion of New Zealand}}<br />{{flag|Netherlands}}<br />{{flag|Norway}}<br />{{flagicon|Czechoslovakia}} [[Free Czechoslovak Forces]]<br />{{flagcountry|Kingdom of Greece|state}} | combatant2 = {{flagcountry|Nazi Germany}} | commander1 = <!-- 1st Canadian Army was not activated until later in the campaign so they should not be mentioned here --> {{flagicon|United States|1912}} [[Dwight David Eisenhower|Dwight Eisenhower]]<br />([[Supreme Allied Commander]])<br />{{flagicon|United Kingdom}} [[Arthur Tedder, 1st Baron Tedder|Arthur Tedder]] (Deputy Supreme Allied Commander)<br />{{flagicon|United Kingdom}} [[Bernard Law Montgomery, 1st Viscount Montgomery of Alamein|Bernard Montgomery]] ([[Twenty-first Army Group|21st Army Group]], Ground Forces Commander in Chief) <br />{{flagicon|United Kingdom}} [[Trafford Leigh-Mallory]] (Air Commander in Chief)<br />{{flagicon|United Kingdom}} [[Bertram Ramsay]] (Naval Commander in Chief) <br /> {{flagicon|United States|1912}} [[Omar Nelson Bradley|Omar Bradley]] ([[First United States Army|U.S. 1st Army]])<br />{{flagicon|United Kingdom}} [[Miles Dempsey]] ([[Second Army (United Kingdom)|British 2nd Army]]) | commander2 = {{flagicon|Nazi Germany}} [[Gerd von Rundstedt]] ([[OB West|''Oberbefehlshaber West'']])<br />{{flagicon|Nazi Germany}} [[Erwin Rommel]] ([[Army Group B|''Heeresgruppe'' B]])<br />{{flagicon|Nazi Germany}} [[Friedri