Hal Colebatch

Upon Frank Wilson becoming premier in July 1916, Colebatch was appointed Minister for Education and Colonial Secretary. During a Spanish flu outbreak in South Australia and Victoria in early 1919, Colebatch was Acting Premier as Premier Henry Lefroy was travelling interstate. Colebatch chose to close the Western Australian border, leaving Lefroy and two ministers stuck outside the state.

In April 1919, Lefroy resigned as premier and Colebatch took over, making him the only premier to come from the Legislative Council rather than the Legislative Assembly. The major event during his premiership was the 1919 Fremantle Wharf riot, in which two unions were fighting with each other. Colebatch resigned as premier one month after taking the job and was succeeded by Mitchell. Colebatch served as a minister in the James ministry for four years, but resigned to become agent-general in 1923.

He served most of his time as agent-general under a Labor government as Phillip Collier beat Mitchell in an election in March 1924. While agent-general, he toured Italy and met Benito Mussolini, which led him to form his anti-fascist political beliefs. After returning to Australia in 1927, he wrote a book at the request of Collier on the history of Western Australia to commemorate the state's centenary. He also sat on the Royal Commission on the Constitution.

In 1928, he was elected to the Australian Senate, where he spent much of his time criticising protectionism, blaming it for worsening the Great Depression. He resigned in 1933 to take the position of agent-general again. The Western Australian secession referendum occurred so