 After sick leave in London and a dinner date with one of the secretaries of the head of MI6, Royal Navy Captain Mansfield Smith-Cumming (the original "C"), Landau was recruited and sent to the MI6 station in Rotterdam.From there all the British spy networks in Belgium, France and Germany itself were handled under command of Richard B. Tinsley.Landau became head of military intelligence at the Rotterdam branch, and his main task was to connect with Belgian resistance groups.