One of the few parts of Security Service work to come to Churchill's attention from other sources was the extraordinary bravery of Victor Rothschild as head of its counter-sabotage department in defusing German bombs, meticulously recording his every move by field telephone in case he was killed in the attempt. (Rothschild owed much of his success to the expertise in micro-manipulation which he had acquired as a young zoologist at Cambridge University dissecting frogs' eggs and sea-urchins.) But, when Churchill asked Petrie in February 1944 about Rothschild's success in defusing a German bomb hidden in a crate of Spanish onions which was timed to explode in a British port, the DG's response was so off-hand that it amounted to a brush-off - or, as Rothschild described it, 'a raspberry'. The head of Churchill's Defence Office, General Sir Hastings 'Pug' Ismay, replied that the Prime Minister would not be content with the information supplied and asked for more. When it was provided, Churchill took the personal decision to award Rothschild the George Medal.