This chapter explores the significant yet often overlooked impact of Adolf Hitler's drug use on his health and leadership during World War II. It examines Hitler's complex relationship with his personal physician, Theodor Morell, who administered various substances, including opioids and vitamins, and discusses the implications of this dependency on his decision-making and military strategy. The narrative connects these historical practices to broader consequences, revealing how drug reliance affected not only Hitler but also the trajectory of the war.