Walter was a captain in the German12th Grenadier Regiment [Royal Prussian Grenadier Prinz Carl von Preuben, 2nd Brandenburg, N12-to give him is full title]. His narrative gives a superb insight into the outbreak of war and his regiment's mobilisation, followed by the advance through Belgium and France, including the author's participation at the battles of Mons, Le Cateau, the Marne and the Aisne. His account of what it was like to face Britain's Old Contemptibles' at Mons is particulaly valuable.