Global commitments limit the Graf Spee hunt

British intelligence drew on diplomats, merchant-shipping contacts, and cruiser aircraft because the region lacked the infrastructure for a comprehensive air search. The Town-class cruisers best suited to economic-warfare patrols were committed elsewhere, while the Royal Navy still had to contain Germany in northern waters, deter Italy in the Mediterranean, and watch Japan in the Far East. Freetown guarded the concentration of food, raw materials, and shipping from Africa and the Indian Ocean, so it could not simply be stripped of protection. Activity and signals around Force H may also have encouraged Langsdorff to move south and avoid the most valuable African routes. Those commitments left the South Atlantic hunting groups with ships already on station rather than the ideal units for the mission. Numerical superiority still forced planners to decide where they could accept risk.