During the mid 1930s, some political leaders observed that both the Empire of Japan and Nazi Germany had the appearance of having been making strides towards a heavy preparedness for war, which in turn led to several other countries commencing their own preparations in response. However, in the case of Australia, the nation had no domestic aircraft industry, partially due to a historical preference for the procurement of both civil and military-orientated aircraft to be sourced overseas from manufacturers based in the United Kingdom, which had come about through strong political and cultural ties between the two nations. Around the same time, the Australian government decided to embark upon the development and expansion of the RAAF into a fighting force capable of defending the nation against external aggressors, in line with recommendations made by a formal evaluation compiled by Sir John Salmond in 1928. Allegedly, the move in Australia had been heavily influenced by a British decision taken in May 1935 to massively increase the front-line strength of the Royal Air Force (RAF).