The German Instrument of Surrender (German: Bedingungslose Kapitulation der Wehrmacht) was the legal instrument that established the armistice ending World War II in Europe. It was signed by representatives of the Oberkommando der Wehrmacht (OKW) and the Allied Expeditionary Force together with the Soviet High Command, French representative signing as witness on 7 May, and signed again by representatives of the three armed services of the OKW and the Allied Expeditionary Force together with the Supreme High Command of the Red Army, French and US representatives signing as witnesses (see: Allies of World War II) on 8 May 1945. The date is known in the West as Victory in Europe Day, whereas in post-Soviet states the Victory Day is celebrated on 9 May, since it was signed after midnight Moscow time. In Germany, it is known as the Day of Capitulation (Tag der Kapitulation).

There were three language versions of the surrender document. The English and Russian versions were the only authoritative ones.

Instrument of Surrender is a name often given to surrendering documents of a military conflict, as those documents are legal instruments. Some such documents are:

Adolf Hitler (German: [ˈadɔlf ˈhɪtlɐ] ( listen); 20 April 1889 – 30 April 1945) was an Austrian-born German politician and the leader of the National Socialist German Workers Party (German: Nationalsozialistische Deutsche Arbeiterpartei (NSDAP), commonly referred to as the Nazi Party). He was chancellor of Germany from 1933 to 1945 and dictator of Nazi Germany (as Führer und Reichskanzler) from 1934 to 1945. Hitler is commonly associated with the rise of fascism in Europe, World War II, and the Holocaust.

A decorated veteran of World War I, Hitler joined the German Workers' Party, precursor of the Nazi Party, in 1919, and became leader of the NSDAP in 1921. In 1923, he attempted a coup d'état, known as the Beer Hall Putsch, in Munich. The failed coup resulted in Hitler's imprisonment, during which time he wrote his memoir, Mein Kampf (My Struggle). After his release in 1924, Hitler gained popular support by attacking the Treaty of Versailles and promoting Pan-Germanism, antisemitism, and anticommunism with charismatic oratory and Nazi propaganda. After his appointment as chancellor in 1933, he transformed the Weimar Republic into the Third Reich, a single-party dictatorship based on the totalitarian and autocratic ideology of Nazism. His aim was to establish a New Order of absolute Nazi German hegemony in continental Europe.

Karl Dönitz (German pronunciation: [ˈdøːnɪts] ( listen); 16 September 1891 – 24 December 1980) was a German naval commander during World War II. He started his career in the German Navy (Kaiserliche Marine, or "Imperial Navy") before World War I. In 1918, while he was in command of UB-68, the submarine was sunk by British forces and Dönitz was taken prisoner. While in a prisoner of war camp, he formulated what he later called Rudeltaktik ("pack tactic", commonly called "wolfpack"). At the start of World War II, he was the senior submarine officer in the German Navy. In January 1943, Dönitz achieved the rank of Großadmiral (Grand Admiral) and replaced Grand Admiral Erich Raeder as Commander-in-Chief of the German Navy (Oberbefehlshaber der Kriegsmarine). On 30 April 1945, after the death of Adolf Hitler and in accordance with Hitler's last will and testament, Dönitz was named Hitler's successor as Staatsoberhaupt (Head of State), with the title of Reichspräsident (President) and Supreme Commander of the Armed Forces. On 7 May 1945, he ordered Alfred Jodl to sign the German instruments of surrender in Rheims, France. Dönitz remained as head of the Flensburg Government, as it became known, until it was dissolved by the Allied powers on 23 May.

Harry S. Truman (May 8, 1884 – December 26, 1972) was the 33rd President of the United States (1945–1953). As President Franklin D. Roosevelt's third vice president and the 34th Vice President of the United States (1945), he succeeded to the presidency on April 12, 1945, when President Roosevelt died less than three months after beginning his unprecedented fourth term.

During World War I, Truman served in combat in France as an artillery officer in his National Guard unit. After the war, he joined the Democratic Party political machine of Tom Pendergast in Kansas City, Missouri. He was elected a county official and in 1934 United States senator. After he had gained national prominence as head of the wartime Truman Committee, Truman replaced vice president Henry A. Wallace as Roosevelt's running mate in 1944.

Truman faced many challenges in domestic affairs. The disorderly postwar reconversion of the economy of the United States was marked by severe shortages, numerous strikes, and the passage of the Taft–Hartley Act over his veto. He confounded all predictions to win election in 1948, helped by his famous Whistle Stop Tour of rural America. After his election, he passed only one of the proposals in his liberal Fair Deal program. He used executive orders to end racial discrimination in the armed forces and created loyalty checks that dismissed thousands of communist supporters from office.