Held to be the best written of all the official histories of operations on the Western Front begins with a review of the allied prospects for 1917 as discussed at the Chantilly Conference and then covers the first five months of 1917: the operations on the Ancre in Jan/Feb, the German withdrawal and the British Arras Offensive April - May 1917 Vimy, the battles of the Scarpe (3), of Bullecourt (2), and of Arleux.