Irish training fields offered shorter logistics while the Canadian prairies provided better space and conditions. Trainees sent to Canada had to cross the Atlantic by ship in both directions. Ireland sat close enough for large aircraft to shuttle groups of personnel quickly between the training area and Britain. The trade-off is worse weather with less exposure to the shipping bottleneck.
Notable Point · 2:21:24-2:22:06
Irish air training trades weather for shorter logistics
Canada offered better training weather, but an allied Ireland would let Britain move pilots by air instead of consuming transatlantic shipping capacity.