1936 Swiss Grand Prix

Rudolf Caracciola leading the pack through Quarry, just after the start of the 1936 Swiss Grand Prix
It ended as an Auto Union 1-2-3 with Rosemeyer taking the win from Achille Varzi and Hans Stuck.
04-Apr-24 historicracing.com
Having qualified on pole, Caracciola retired on lap 29 when the rear axle broke on his W25 Mercedes-Benz.