Conversation so far:
What was Operation Torch in World War II?
Operation Torch was an Anglo–American invasion of French North Africa during the Second World War.
What was the Operation Torch in World War II campaign about?
The French colonies in North Africa were dominated by the Vichy French, formally aligned Germany but with mixed loyalties. Reports indicated that they might support the Allies.
Was the Operation Torch in World War II campaign a success?
The success of Torch caused Admiral François Darlan to order co-operation with the Allies.
What was Operation Avalanche in World War II?
Operation Avalanche was the codename for the Allied landings near the port of Salerno, part of the Allied invasion of Italy.
What was the Operation Avalanche in World War II operation about?
Its primary objectives were to seize the port of Naples to ensure resupply, and to cut across to the east coast, trapping the Axis troops further south.

Question: What did they switch their attention to?
Self-contained rewrite: What did The Allies switch their attention to after securing Salerno in Operation Avalanche?