Edward Spears gives in his book Liaison 1914 an outstanding account of the dramatic retreat during the first 40 days of worldwar 1. As a british liaison officer, attached to the french fifth army, he was well placed to give a eyewitness report. Spears is a well talented writer and ably pictures the chaos, the suffering and the conflicting information experienced by the left wing of the allied armies. Although the book gives a clear picture on the general course of events, his personal experiences in particular make his book a unique document of this episode. For instance his visit, as a subaltern, to Lanzerac, the commanding general of the fifth army, to plea for help to the endangered BEF is moving (pg 199). Together with The Guns of August this book, no doubt, is the best ever written about the first month of worldwar 1.