Fuller was the only foreigner present at Nazi Germany's first armed manoeuvres in 1935. Fuller frequently praised Adolf Hitler in his speeches and articles, once describing him as "that realistic idealist who has awakened the common sense of the British people by setting out to create a new Germany". On 20 April 1939 Fuller was an honoured guest at Hitler's 50th birthday parade, watching as "for three hours a completely mechanised and motorised army roared past the Führer." Afterwards Hitler asked, "I hope you were pleased with your children?" Fuller replied, "Your Excellency, they have grown up so quickly that I no longer recognise them."