The official 1935 British War Office guide to the Battle of the Marne in September 1914, the action in which the German advance by von Kluck's First and von Bulow's Second Armies on Paris was checked at the instigation of General Gallieni and then turned back by the action of the French Fifth and Sixth Armies and the BEF, and which changed the whole course of the Great War. The pack consists of a preliminary account of the events leading up to the battle, with relevant notes on infantry and cavalry tactics from the 1914 Training Manuals. A day-by-day summary of the battle between 8-10th September; a suggested tour of the battlefield; a section on the principal lessons learned from the battle and a concluding section showing the order of battle of the British, French and German forces engaged. The text is accompanied by three large battlefield maps depicting the unfolding situation on the 8th, 9th and 10th September. An indispensible and authoritative addition to the libraries of all Great War enthusiasts.