Brooklyn escorts the American move into Iceland

Brooklyn left the Pacific in May 1941 and escorted a convoy of Marines to Reykjavík. The Marines relieved British forces that had occupied Iceland to deny Germany a strategically placed North Atlantic base after the invasion of Norway. The deployment shows the United States assuming active Atlantic security duties before its formal entry into the war. Brooklyn's subsequent neutrality patrols tied cruiser endurance and escort capability to the widening defense of convoy routes and the Icelandic base network.