In the midst of her studies at Oxford when war broke out across Europe, Vera Brittain left university in 1915 to become a V.A.D (Voluntary Aid Detachment) nurse, treating soldiers in London, Malta and Etaples in France. The events of the First World War were to have an enormous impact on her life. Four of Brittain's closest friends including her fiancé Roland Leighton and her brother Edward Brittain MC were killed in action, sparking a lifelong commitment to pacifism. In 1933 she published Testament of Youth, the first of three books dealing with her experience of war.