In a series of high-stakes strategic conferences in late 1943, the Allies made several key decisions that shaped wartime strategy, while reflecting the changing balance of power between the Allied nations and foreshadowing the postwar emergence of the bipolar world.

Operation Clipper, an offensive to reduce the Geilenkirchen salient in Germany, highlighted the value of specialized tanks in a combined US-British operation.

Mark Stepelton flew in some of the most dangerous environments of the war by escorting bombing aircraft over occupied Europe and conducting air interdiction missions, striking enemy targets deep behind the lines. 

In a lesser-known operation that presaged the horrors of the deadly Battle of Hürtgen Forest, the XIX Corps broke through the Siegfried Line north of Aachen, Germany, in October 1944.

In the span of only a few days in October 1943, the US Army Air Forces was forced to reconsider its entire strategic bombing endeavor in the European theater.

German technology surpassed the Allies' with the production of radio-guided weapons that worked in a combat environment. As early as 1943, the Henschel (Hs) 293 and the Ruhrstahl X-1 (Fritz X) were the first guided bombs employed in combat. These weapons debuted around the time of the Allied assault on Salerno and were a new concern for fleet defense. 

Churchill’s famous quip about the Royal Air Force’s “few” was inspirational, but Fighter Command wasn’t so few and even had several advantages. 

Historians have debated the logic of fighting to liberate Brest, with some arguing that it would have made more sense to simply bypass the city and isolate the garrison.