"Since Roman timres, the French department of the Somme has witnessed many wars [battles], including Crécy (1346), Agincourt (1415), the Franco-Prussian War of 1870 and, of course, the two World Wars. ... This ... guide sets out to describe every place on the Somme where there is a military cemetery, memorial, preserved trench or crater not just from the First World [Great] War but throughout the ages until the Allies swept away the Nazi armies during their 1944 advance. ..."--Jacket.