One of the last cavalry units to ride horses into battle, the Sherwood Rangers were transformed into a “mechanized cavalry” of tanks in 1942. After winning acclaim in the North African campaign, they spearheaded one of the D-Day landings in Normandy and became the first British troops to cross into Germany. Their courage, skill, and tenacity contributed mightily to the surrender of Germany in 1945.

The Red Army had much to avenge when it finally reached the frontiers of the Third Reich in January 1945. Frenzied by their terrible experiences with Wehrmacht and SS brutality, they wreaked havoc - tanks crushing refugee columns, mass rape, pillage, and unimaginable destruction. Hundreds of thousands of women and children froze to death or were massacred; more than seven million fled westward from the fury of the Red Army. It was the most terrifying example of fire and sword ever known.

D-Day, June 6, 1944, and the 76 days of bitter fighting in Normandy that followed the Allied landing, have become the defining episode of World War II in the west - the object of books, films, television series, and documentaries. Yet as familiar as it is, as James Holland makes clear in his definitive history, many parts of the OVERLORD campaign, as it was known, are still shrouded in myth and assumed knowledge.

During the third week of February 1944, the combined Allied air forces based in Britain and Italy launched their first round-the-clock bomber offensive against Germany. Their goal: to smash the main factories and production centers of the Luftwaffe while also drawing German planes into an aerial battle of attrition to neutralize the Luftwaffe as a fighting force prior to the cross-channel invasion, planned for a few months later. Officially called Operation ARGUMENT, this aerial offensive quickly became known as “Big Week,” and it was one of the turning-points of World War II.

Almost all accounts of D-Day are told from the Allied perspective, with the emphasis on how German resistance was overcome on June 6, 1944. But what was it like to be a German soldier in the bunkers and gun emplacements of the Normandy coast, facing the onslaught of the mightiest seaborne invasion in history? What motivated the German defenders, what were their thought processes - and how did they fight from one strong point to another, among the dunes and fields, on that first cataclysmic day?