After the outbreak of war, No. 112 Squadron was sent to Ottawa in February 1940, and re-equipped with the Westland Lysander, stocks of which were left behind when No. 110 Squadron was posted overseas. The squadron was likewise sent to Europe on 30 June 1940 with the intention to have No. 112 Squadron become part of the British Expeditionary Force but the decision was made that Army Co-operation squadrons were not needed in France, and the squadron was re-deployed to coastal defence duties in England.