Historians have often argued over whether Haig was a good general. In the years after the war, he was popular. After his death, some historians and politicians wrote books criticising Haig. They argued he made mistakes that led to a lot of casualties among British troops, especially at the Somme and Passchendaele; he has been nicknamed 'Butcher Haig' or 'the Butcher of the Somme'. David Lloyd George, the Prime Minister during the later years of the war, also did not agree with Haig. One of the best known books criticising Haig was Alan Clark's book "The Donkeys" (1961). This is known as the 'lions led by donkeys' view: the idea that Britain had great soldiers but bad generals.