Potsdam
Harry Truman was angered when MacArthur demanded an unconditional surrender from North Korea during the Korean War. Harry Truman fired MacArthur after a congressman received a letter from MacArthur stating this idea. MacArthur knew that this would be a way to prolong the war in Korea.
There was no treaty, and the Civil War was the first war that the US won without a treaty being signed. Although Abraham Lincoln had never demanded an unconditional surrender, and although Jefferson Davis had ordered Lee to continue fighting, Lee disobeyed that order and surrendered the Confederacy unconditionally. In return Grant allowed terms which were very lenient, and it is sometimes supposed that a treaty was singned, but it was in fact an unconditional surrender.
Georges Clemenceau
Fort Henry and Fort Donelson were captured by General US Grant early in 1862. It was after the second victory, at Donelson, that US Grant demanded 'Unconditional Surrender' - a new phrase that caught the public imagination, made Grant famous overnight, and left him with a nickname that chimed favorably with 'U.S.' - his own initials, as well as his country's. It should be noted that very often US Grant granted parole to captured Confederate soldiers. The so-called "unconditional surrender" idea was a practice that was only sometimes used by the Union and by the South.
From Stalin, whose troops occupied most of Eastern Europe, Truman demanded that free elections be held in those countries. Unfortunately, the Soviets controlled the governments and ensured that communist puppet parties gained power, leading to the Warsaw Pact and Russian hegemony.
From Japan, Truman demanded unconditional surrender. From Stalin, Truman demanded free elections throughout Eastern Europe.
Potsdam Conference
Yes
Harry Truman was angered when MacArthur demanded an unconditional surrender from North Korea during the Korean War. Harry Truman fired MacArthur after a congressman received a letter from MacArthur stating this idea. MacArthur knew that this would be a way to prolong the war in Korea.
The Union army under U.S. Grant. This was the battle where he demanded 'Unconditional Surrender', which became his nickname.
The next objective was the river-ports of Fort Henry and Fort Donelson. (That was where Grant demanded 'Unconditional Surrender', which became his trademark name.)
None. Unlike previous American wars, it was not settled by treaty. Although Lincoln did not demand it, and Davis forbade it, Lee surrendered the South to the North unconditionally. The myth that Lincoln demanded unconditional surrender has been used by subsequent US Presidents as a justification for their demands of unconditional surrender.
There was no treaty, and the Civil War was the first war that the US won without a treaty being signed. Although Abraham Lincoln had never demanded an unconditional surrender, and although Jefferson Davis had ordered Lee to continue fighting, Lee disobeyed that order and surrendered the Confederacy unconditionally. In return Grant allowed terms which were very lenient, and it is sometimes supposed that a treaty was singned, but it was in fact an unconditional surrender.
The Western Allies had pushed the Nazis back to the Elba River. The Russians surrounded and destroyed Berlin. Hitler and his immediate entourage committed suicide in the Fürerbumker. And even though the Germans made overtures to Eisenhower offering separate peace, he rejected the offer and demanded unconditional complete surrender.
My gosh, there WERE no peace talks! the Allies whipped both the Germans and the Japanese and demanded and got unconditional surrender. There were peace talks for the Korean War because no one was clearly winning at the time. They were held in Paris.
While still unknown, he captured this strategic port from the Confederates, thus liberating the great Cumberland River. The terms he demanded 'Unconditional Surrender' touched a nerve with the Northern public, who liked the play on 'US', which were also his initials.
Georges Clemenceau