was she a part of any war?
Yes, second World War.
Elizabeth II
In September 1939, Britain entered the Second World War. Lord Hailsham suggested that Princesses Elizabeth and Margaret should be evacuated to Canada to avoid the frequent aerial bombing. 
who was the last ruling king of england UNANSWERABLE what is the monarchy of the united kingdom? The monarch and their immediate family undertake various official, ceremonial, diplomatic and representational duties. who heads the monarchy? The Queen. what is the queen's name? The current monarch is Queen Elizabeth II. who was she married to? Prince Philip of Greece and Denmark.
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Elizabeth II [SEP] Second World War
In September 1939, Britain entered the Second World War. Lord Hailsham suggested that Princesses Elizabeth and Margaret should be evacuated to Canada to avoid the frequent aerial bombing. This was rejected by their mother, who declared, "The children won't go without me. I won't leave without the King. And the King will never leave." The princesses stayed at Balmoral Castle, Scotland, until Christmas 1939, when they moved to Sandringham House, Norfolk. 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.