Task-group frigates and independent pickets need different designs

A light frigate operating inside a task group is distinguished here from a larger frigate or destroyer expected to hold an outer picket station. In this comparison, the frigate concentrates on anti-submarine warfare and the destroyer on air warfare. Arethusa- and Atlanta-class light cruisers illustrate useful formation ships whose role did not require fighting larger cruisers or capital ships alone. Sending one against a Deutschland-class Panzerschiff would have assigned it a different kind of task. Both classes fought effectively in their assigned roles, but they were not expected to do the same work as their larger Town- and Brooklyn-class counterparts. The shared light-cruiser label therefore concealed substantial differences in capability and employment.