The Ten Year Rule was a British government guideline, first adopted in August 1919, that the armed forces should draft their estimates "on the assumption that the British Empire would not be engaged in any great war during the next ten years". The Ten Year Rule was abandoned by the Cabinet on 23 March 1932, but this decision was countered with: "this must not be taken to justify an expanding expenditure by the Defence Services without regard to the very serious financial and economic situation" which the country was in due to the Great Depression.