Elizabeth II's wartime mechanic training

Was the future Queen Elizabeth II trained as a mechanic during the Second World War?

Yes; she qualified as a vehicle mechanic in the Auxiliary Territorial Service and could work on her own car.

The future Queen Elizabeth II qualified as a vehicle mechanic and could work on her own car. The organization named in chat was the Auxiliary Territorial Service (ATS). Her wartime service therefore included practical trade training. The exchange centers on that work rather than on a ceremonial role.