The war's major theaters covered Europe, North Africa, the Mediterranean, East and Southeast Asia, and the Pacific. In Europe, fighting extended from Atlantic coasts to the Soviet Union, while Asian campaigns ranged across China, Burma, the Philippines, and numerous Pacific islands. Naval and air warfare contested the Atlantic, Arctic, Mediterranean, Indian Ocean, and Pacific supply routes. Cities, deserts, mountains, island chains, and long ocean distances produced sharply different conditions across the global conflict.