Cyril P. Callister Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread. The son of a teacher and postmaster, and one of seven children, he attended the Ballarat School of Mines and later won a scholarship to the University of Melbourne. He gained a Bachelor of Science degree in 1914 and a Master of Science degree in 1917. In early 1915, Callister was employed by food manufacturer Lewis & Whitty, but later that year he enlisted in the Australian Imperial Force. After 53 days, however, he
Second Australian Imperial Force in the United Kingdom lacked specialists in X-rays, eye conditions and anaesthesia. Australforce had more than enough nurses to staff the facility, and those who were not needed there were posted to nearby British hospitals. Due to shortages of Australian orderlies, local women were hired to provide domestic services. Detention facilities were established in the UK. Prior to Australforce's arrival, it had been intended to use British Army facilities to hold Australian offenders. However, these facilities were found to be overcrowded and unable to accommodate many Australians. After a period in which offenders other than those serving long sentences were held by their units,