While merchant marines do not engage in combat in the traditional sense, they play an essential role in wartime operations by providing crucial logistical support. During conflicts, such as World War II, merchant marines were responsible for transporting not only troops but also vital supplies like fuel, ammunition, and equipment to various combat zones, including Europe, North Africa, and Southeast Asia. Their efforts ensured that military forces were adequately supplied and could operate effectively in challenging environments. According to the National WWII Museum, the contributions of merchant marines were indispensable to the overall war effort, highlighting their importance in maintaining the flow of resources necessary for military success.