Peter II of Yugoslavia, known also as Petar II Karađorđević (Cyrillic: Краљ Петар II Карађорђевић) (6 September 1923 – 3 November 1970), was the third, as well as the last, King of the Kingdom of Yugoslavia, previously known as Kingdom of Serbs, Croats and Slovenes before 1929. He was the eldest son of King Alexander I of Yugoslavia and Princess Maria of Romania; two of his godparents were King George VI and Queen Elizabeth of the United Kingdom.
Postponing Operation Barbarossa, Germany simultaneously attacked Yugoslavia and Greece. From 6 April Luftwaffe pounded Belgrade for three days and three nights, Operation Punishment. Within a week, Germany, Bulgaria, Hungary and Italy invaded Yugoslavia and the government was forced to surrender on 17 April. Yugoslavia was divided to satisfy Italian, Bulgarian, Hungarian and German demands and a puppet Croat state proclaimed.
Peter was forced to leave the country with the Yugoslav Government following the Axis invasion; initially the King went with his government to Greece, and Jerusalem, then to the British Mandate of Palestine and Cairo, Egypt. He went to England in June 1941, where he joined numerous other governments in exile from Nazi-occupied Europe. The King completed his education at Cambridge University and joined the Royal Air Force.
Despite the collapse of the Yugoslav army, two rival resistance groups to the occupying forces formed. The first was the Royalist Yugoslav Army in the Fatherland (better known as the Chetniks) led by loyalist General Draža Mihailović, the Minister of Defence in the exile government. The other was the revolutionary Partisans led by the communist Josip Broz - known to the world later as Tito. The Allies, having initially supported Mihailovic, threw their support behind Tito in 1943, as their sources came to indicate that the Partisans were more engaged in fighting the German enemy than were the rival Chetniks.
On 4 March 4 2007 Crown Prince Alexander announced plans to return the body of his father to Serbia.* The Mausoleum of the Serbian Royal Family The plan has upset some Serbian-Americans. Peter II personally chose St. Sava Serbian Orthodox Monastery as his final resting place because of the thousands of Serbians living in the Chicago area.