Even much larger peacetime fleets cannot maintain maximum strength everywhere. Surface raiders and damage in a primary theater can pin modern ships on trade routes or force reinforcements away from the decisive area. Allied specialization lets Britain emphasize the Atlantic, Mediterranean, and Indian Ocean while the United States concentrates on the Pacific. Dominion and other allied fleets cover regional work, but their ships remain part of the coalition's finite total rather than free additional capacity. Burden-sharing is a force-availability problem rather than a measure of national commitment.
Notable Point · 2:30:00-2:34:27
Alliances divide oceans because no navy has infinite ships
British and American fleets still need geographic burden-sharing, concentrating their best units in different primary theaters.