In the Balkans… British and Australian forces defending the Monastir Gap pull back. Meanwhile, Allied forces to the east are pulling back from the Aliakmon Line to a position hinging on Mount Olympus. Meanwhile, in Yugoslavia, the city Belgrade surrenders, in the evening, to General Kleist's forces who have advanced down the Morava valley from Nis. They only reach Belgrade a little before other German units from the north and east.