Episode 21 of Turning Points: History’s Greatest Battles examines the Second Battle of El Alamein (1942) — the clash that halted Axis expansion in North Africa and marked a decisive shift in World War II. After a series of British defeats, Axis forces under Erwin Rommel advanced deep into Egypt, threatening the Suez Canal and vital Allied supply routes. At El Alamein, geography forced both armies into a narrow front, eliminating maneuver and making a decisive stand unavoidable. The arrival of General Bernard Montgomery transformed the British Eighth Army. Rejecting risky improvisation, Montgomery rebuilt morale, stockpiled supplies, and prepared a carefully planned offensive. When the battle began on October 23, massive Allied artillery and methodical infantry advances ground down Axis defenses. Rommel’s army, already weakened by fuel shortages and stretched supply lines, could not withstand sustained pressure. The Allied breakthrough during Operation Supercharge forced Rommel into retreat, despite Hitler’s orders to stand fast. El Alamein secured Egypt, protected the Suez Canal, and paved the way for Allied landings in North Africa. Alongside Stalingrad and Midway, it marked the moment when the Axis powers permanently lost the initiative — a true turning point in the war.