In May of 1940, the armies of Nazi Germany were marching through France. In the face of this devastating advance, one of World War II’s greatest acts of heroism would be a retreat: the evacuation of the British Army from Dunkirk.

In Dunkirk: Fight to the Last Man, we are given an unprecedented vision of these harrowing days. Hugh Sebag-Montefiore has created a bold and powerful account of the small group of men who fended off the German army so that hundreds of thousands of their comrades could exit this doomed land. These brave troops, members of the British Expeditionary Forces and the French army, held a series of strong points inland, allowing the rest of the battered battalions to escape to the coast. Those that remained were ordered to fight to the last man.

Much has been written about the efforts of the Royal Navy in shuttling soldiers to safety, but here we are given an unparalleled look inside this massive operation and the invaluable role played by the BEF. Without the ferocity and bravery of the officers and ordinary soldiers on the ground, the German army would likely have encircled nearly half a million Allied soldiers. The loss of these battalions, Sebag-Montefiore argues, could have dramatically changed the direction of the war, and enabled Hitler to invade a weakened Britain.

This is military history at its best: a judicious analysis of the movement of the war, and a vivid feel of what it was like to be on the front line. Sebag-Montefiore brings these men—the forgotten heroes of Dunkirk—to life, and it is their valiant exploits and devotion to their brethren that form the heart of this important book.

The notion of battles as the irreducible building blocks of war demands a single verdict of each campaign—victory, defeat, stalemate. But this kind of accounting leaves no room to record the nuances and twists of actual conflict. In Somme: Into the Breach, the noted military historian Hugh Sebag-Montefiore shows that by turning our focus to stories of the front line—to acts of heroism and moments of both terror and triumph—we can counter, and even change, familiar narratives.

Planned as a decisive strike but fought as a bloody battle of attrition, the Battle of the Somme claimed over a million dead or wounded in months of fighting that have long epitomized the tragedy and folly of World War I. Yet by focusing on the first-hand experiences and personal stories of both Allied and enemy soldiers, Hugh Sebag-Montefiore defies the customary framing of incompetent generals and senseless slaughter. In its place, eyewitness accounts relive scenes of extraordinary courage and sacrifice, as soldiers ordered “over the top” ventured into No Man’s Land and enemy trenches, where they met a hail of machine-gun fire, thickets of barbed wire, and exploding shells.

Rescuing from history the many forgotten heroes whose bravery has been overlooked, and giving voice to their bereaved relatives at home, Hugh Sebag-Montefiore reveals the Somme campaign in all its glory as well as its misery, helping us to realize that there are many meaningful ways to define a battle when seen through the eyes of those who lived it.