He was a government minister under Joseph Lyons and Robert Menzies, leader of the Country Party from 1939 to 1940, and finally Speaker of the House of Representatives from 1950 until his death.He was educated at state schools and worked on his father's farm at Happy Valley until 1916, when he joined the First Australian Imperial Force and fought on the Western Front.After World War I Cameron took up farming near Loxton as part of a soldier settlement scheme, and became active in the newly formed Country Party.[1] An early member of the Country Party, Cameron unsuccessfully stood for the South Australian House of Assembly seat of Wooroora at the 1924 state election.The Country Party's terms were stiff; among them, Cameron sought to transfer to federal politics, and wanted a safe seat in which to run at the next election.[1] Shortly after taking his seat he moved a motion to expel Lang Labor MP Jock Garden from parliament for his former Communist affiliation, which caused a "near-riot".In November 1937, Cameron stood for the deputy leadership of the Country Party following the retirement of Thomas Paterson; he did not win enough votes to make the second ballot.He temporarily suspended radio 2KY's licence because he objected to political views expressed on it (2KY was the property of the ALP's New South Wales branch).According to McEwen, the result was skewed by the absence of four MPs who had refused to sit with the Country Party with Page as leader – a motion to re-admit them was defeated by seven votes to six.