In early 1942, the United States launched a secret naval experiment to stop German submarines. At the center of that gamble ...

Buried beneath wartime secrecy were submarines whose capabilities surpassed anything the enemy expected. Designed with ...

Meet the women who were the “secret weapon” that won the war and changed the world in the process. Meet the American women who built the planes and flew them, fought on the warfront and the home front ...

Introduction -- Chapter 1: The Allied technical air intelligence units -- Chapter 2: Evaluating fighters -- Chapter 3: Evaluating bombers and reconnaissance aircraft -- Chapter 4: Evaluating seaplanes ...