Early life of Elizabeth II

resources:https://edition.cnn.com/2016/04/20/world/gallery/tbt-queen-elizabeth-ii-first-year/index.html Elizabeth Alexandra Mary born at 02:40 Gmt on 21st April 1926 was the youngest daughter of Scottish aristocrat the Earl of Strathmore and Kinghorne. On 29th May she was baptised by the Anglican Archbishop of York, Cosmo Gordon Lang, in the private chapel of Buckingham Palace. She was named Elizabeth after her mother, Alexandra after George V's mother. who had died six month earlier, and Mary after her paternal grandmother called "Lilibet" by her close family. Later at 1930 Elizabeth's only sibling, Princess Margaret was born. Both princesses were educated at home under the supervision of their mother and their governess, Marion Crawford.

resource:https://www.eonline.com/news/898600/princess-margaret-royal-rebel-how-her-early-heartbreak-and-headstrong-ways-moved-the-monarchy-forward Elizabeth received private tuition in constitutional history from Henry Marten, vice-provost of Eton College, and learned french from a succession of native-speaking governess. A girl Guides company, the 1st Buckingham Palace, was formed specifically so she could socialise with girls her own age. later she was enrolled as a sea ranger. Elizabeth's parents toured Canada and the United States in 1939. Earlier, Elizabeth remained in Britain during her parents tour at Australia and New Zealand in 1927 since her father thought her being too young to undertake public tours. As her parents departed Elizabeth looked tearful. They corresponded regularly and on 18th May she and her parents made the first royal transatlantic telephone.

recources:https://www.history.com/news/8-things-you-may-not-know-about-queen-elizabeth-ii

In september 1939, Britain entered the Second World War, which lasted until 1945. Many of London's children were evacuated to avoid aerial bombing during the war. Lord Hailsham suggested that the two princesses should be evacuated to Canada but rejected by Elizabeth's mother, who declared "The children won't go without me. I won't leave without the King. And the King will never leave." Princesses Elizabeth and Margaret moved to Sandringham house, Norfolk during Christmas from where they were staying earlier at Balmoral Castle.From February to May 1940, they lived at Royal Lodge, Windsor, until moving to Windsor Castle where they lived for most of the next five years.At Windsor, the princesses staged pantomimes at Christmas in aid of the Queen's Wool Fund, which bought yarn to knit into military garments In 1940, the 14-year-old Elizabeth made her first radio broadcast during the BBC's Children Hour addressing other children who had been evacuated from the cities.She stated: "We are trying to do all we can to help our gallant sailors, soldiers and airmen, and we are trying, too, to bear our share of the danger and sadness of war. We know, every one of us, that in the end all will be well."
In 1943, Elizabeth undertook her first solo public appearance on a visit to the Grenadier Guards, of which she had been appointed colonel the previous year. As she approached her 18th birthday, parliament changed the law so she could act as one of five Counsellors of State in the event of her father's incapacity or absence abroad, such as his visit to Italy in July 1944. In February 1945, she was appointed as an honorary second subaltern in the Auxiliary Territorial Service with the service number of 230873. She trained as a driver and mechanic and was given the rank of honorary junior commander five months later.
At the end of the war in Europe, on Victory in Europe Day, Princesses Elizabeth and Margaret mingled anonymously with the celebratory crowds in the streets of London. Elizabeth later said in a rare interview, "We asked my parents if we could go out and see for ourselves. I remember we were terrified of being recognised . I remember lines of unknown people linking arms and walking down Whitehall, all of us just swept along on a tide of happiness and relief."
Elizabeth was suggested to be made Princess of Wales on her 18th birthday . Home Secretary, Herbert Morrison supported the idea, but the King rejected the idea because he felt such a title belonged solely to the wife of a Prince of Wales and the Prince of Wales had always been the heir apparent. In 1946, she was inducted into the Welsh Gorsedd of Bards at the National Eisteddfod of Wales Princess Elizabeth went in 1947 on her first overseas tour, accompanying her parents through southern Africa. In a broadcast to the British Commonwealth on her 21st birthday, during the tour, she made the following pledge: "I declare before you all that my whole life, whether it be long or short, shall be devoted to your service and the service of our great imperial family to which we all belong."