When Stafford Cripps discovered what Delmer was involved with (through the intervention of Richard Crossman) Cripps wrote to Anthony Eden, then Foreign Secretary: "If this is the sort of thing that is needed to win the war, why, I'd rather lose it." Delmer was defended by Robert Bruce Lockhart, who pointed out the need to reach the sadist in the German nature. GS1 ran for 700 broadcasts before Delmer killed it off in late 1943 with gunfire heard over the radio intimating the authorities had caught up with "Der Chef". The dramatic ending may have been deliberately based on the Gleiwitz incident, when the Nazis staged the capture of a German radio station by Polish forces, an operation which Hitler used to justify the invasion of Poland and the start of the Second World War. Owing to an error by a non-German-speaking transmitter engineer, the programme was accidentally repeated and "Der Chef"'s dramatic on-air murder was broadcast twice.