The supply services of the BEF of 1939 were wholly unprepared for modern warfare and paid the price by their defeat. This book looks at the British Army's supply service, how it developed, and how it failed, especially in the Crimea War, and how reforms in the 19th century reformed it. The focus of the book looks at the developments in the interwar years, and how it functioned during the French Campaign of May/ June 1940. The role of the LOC after the German breakthrough in France has been underestimated and under reported. Only the fortuitous mechanisation of the general transport system of the Army, not due to doctrine or foresight but a dearth of horses in the civil economy, enabled the Army to retreat faster and further than their horse bound allies – the French – and enemies – the Germans. AUTHOR: Peter Whelan is a retired Urological surgeon who did an MA in History at Leeds University in 2009. He has always had an interest in Military History and especially how Armies organise and train for War. 14 photographs, 5 maps