On 26 March 1918, the French marshal Ferdinand Foch was appointed Supreme Allied Commander, gaining command of all Allied forces everywhere, and coordinated the British, French, American, and Italian armies to stop the German spring offensive, the last large offensive of the German Empire.
He remedied this by making up his own title and by writing to Prime Minister Georges Clemenceau to request it, which was immediately granted.
General of the United States' Army Dwight D. Eisenhower served in successive Supreme Allied Commander roles.
Eisenhower then served as Supreme Commander Allied Expeditionary Force (SCAEF) in the European theatre, starting in December 1943 with the creation of the command to execute Operation Overlord and ending in July 1945 shortly after the End of World War II in Europe.
Wilson was succeeded by Field Marshal Harold Alexander, who continued in charge of those Allied forces until the end of the war.
Admiral of the Fleet Lord Louis Mountbatten was Supreme Allied Commander South East Asia (SACSEA) throughout most of its existence.
General of the Army Douglas MacArthur was appointed Supreme Allied Commander, South West Pacific Area (SWPA) on 18 April 1942.
Although not bearing any official title of Supreme Allied Commander, Joseph Stalin, as Supreme Commander-in-Chief of the Soviet Armed Forces, as well as the commanders of the 1st Belorussian, 1st, 2nd, 3rd and 4th Ukrainian Fronts of the Soviet Red Army - Zhukov, Rokossovsky, Konev, Malinovsky, Tolbukhin, Sokolovsky, Yeremenko, Petrov, Vatutin, etc.
After the end of the Soviet Union's European theater of World War II, during the Soviet-Japanese War, the commanders of the Red Army's 1st and 2nd Far Eastern fronts and Transbaikal Front - Vasilevsky (in overall command of all three fronts), Malinovsky, Meretskov and Purkayev - once again acted in de facto capacity of Supreme Allied Commanders as the Mongolian People's Army and partisans of the Chinese Northeast Anti-Japanese United Army and Korean People's Revolutionary Army were incorporated into their order of battle for the liberation of Northern China, Northeastern China and northern Korea from Japanese imperialist occupation.