Large numbers of Halifax bombers were also operated by Coastal Command, which used it to conduct anti submarine warfare, reconnaissance and meteorological operations. The Halifax was heavily used to deploy mines in the vicinity of enemy-held ports. It served increasingly in other support capacities as the war progressed, being used as a glider tug, an electronic warfare aircraft for No. 100 Group and to conduct special operations, such as parachuting agents and arms into occupied Europe, for the Special Operations Executive (SOE).