Unconditional surrender

An unconditional surrender is a surrender in which no guarantees are given to the surrendering party. It is often demanded with the threat of complete destruction, extermination or annihilation.

In modern times, unconditional surrenders most often include guarantees provided by international law. Announcing that only unconditional surrender is acceptable puts psychological pressure on a weaker adversary, but it may also prolong hostilities.

Examples

Banu Qurayza during Muhammad's era

After the Battle of the Trench, in which the Muslims tactically overcame their opponents while suffering very few casualties, efforts to defeat the Muslims failed, and Islam became influential in the region. As a consequence, the Muslim army besieged the neighbourhood of the Banu Qurayza tribe, leading to their unconditional surrender.Watt, ''Muhammad: Prophet and Statesman'', pp. 167–174. All the men, apart from a few who converted to Islam, were executed, while the women and children were enslaved.Peterson, ''Muhammad: the prophet of God'', p. 125-127.Ramadan, ''In the Footsteps of the Prophet'', p. 140f.Hodgson, ''The Venture of Islam'', vol. 1, p. 191.Brown, ''A New Introduction to Islam'', p. 81.Lings, ''Muhammad: His Life Based on the Earliest Sources'', p. 229-233. The historicity of the incident has been questioned. For details and references see discussion in main article.

Napoleon Bonaparte

When Napoleon Bonaparte escaped from his enforced exile on the island of Elba, one of the steps that the delegates of the European powers at the Congress of Vienna took was to issue a statement on 13 March 1815 declaring Napoleon Bonaparte to be an outlaw. The text includes the following paragraphs:

Consequently, as Napoleon was considered an outlaw when he surrendered to Captain Maitland of at the end of the Hundred Days, he was not protected by military law or international law as a head of state and so the British were under no legal obligation to either accept his surrender or to spare his life. However, they did so to prevent him from being a martyr and exiled him to the remote South Atlantic island of Saint Helena.

American Civil War

The most famous early use of the phrase in the American Civil War occurred during the 1862 Battle of Fort Donelson. Brigadier General Ulysses S. Grant of the Union Army received a request for terms from Confederate Brigadier General Simon Bolivar Buckner Sr., the fort's commanding officer. Grant's reply was that "no terms except an unconditional and immediate surrender can be accepted. I propose to move immediately upon your works." When news of Grant's victory, one of the Union's first in the war, was received in Washington, DC, newspapers remarked (and President Abraham Lincoln endorsed) that Grant's first two initials, "U.S.," stood for "Unconditional Surrender," which would later become his nickname.

However, subsequent surrenders to Grant were not unconditional. When Robert E. Lee surrendered his Army of Northern Virginia at Appomattox Court House in 1865, Grant agreed to allow the men under Lee's command to go home under parole and to keep sidearms and private horses. Generous terms were also offered to John C. Pemberton at Vicksburg and, by Grant's subordinate, William Tecumseh Sherman, to Joseph E. Johnston in North Carolina.

Grant was not the first officer in the Civil War to use the phrase. The first instance came some days earlier, when Confederate Brigadier General Lloyd Tilghman asked for terms of surrender during the Battle of Fort Henry. Flag Officer Andrew H. Foote replied, "no sir, your surrender will be unconditional." Even at Fort Donelson, earlier in the day, a Confederate messenger approached Brigadier General Charles Ferguson Smith, Grant's subordinate, for terms of surrender, and Smith stated, "I'll have no terms with Rebels with guns in their hands, my terms are unconditional and immediate surrender." The messenger was passed along to Grant, but there is no evidence that either Foote or Smith influenced Grant's choice of words.

In 1863, Ambrose Burnside forced an unconditional surrender of the Cumberland Gap and 2,300 Confederate soldiers, and in 1864, Union General Gordon Granger forced an unconditional surrender of Fort Morgan.

World War II

The use of the term was revived during World War II at the Casablanca conference in January 1943 when American President Franklin D. Roosevelt stated it to the press as the objective of the war against the Axis Powers of Germany, Italy, and Japan. When Roosevelt made the announcement at Casablanca, he referred to General Grant's use of the term during the American Civil War.

The term was also used in the Potsdam Declaration issued to Japan on July 26, 1945. Near the end of the declaration, it said, "We call upon the government of Japan to proclaim now the unconditional surrender of all Japanese armed forces" and warned that the alternative was "prompt and utter destruction."

It has been claimed that it prolonged the war in Europe by its usefulness to German domestic propaganda, which used it to encourage further resistance against the Allied armies, and by its suppressive effect on the German resistance movement since even after a coup against Adolf Hitler:
It has also been argued that without the demand for unconditional surrender, Central Europe might not have fallen behind the Iron Curtain