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
Prisoners of war in the American Revolutionary War official forms of reaching freedom, parole and exchange, was common among high-ranking officers. Parole specifically dealt with individual prisoners of war and so the process of being removed from imprisonment or house arrest, and instead placed on parole, was a very simple and speedy process. This was what most British and German prisoners of war sought after. The degree of liberty when on parole varied and the breaking of parole was common, as many used it just to make desertion easier. Some British and Hessian prisoners of war were paroled to American farmers. Their labor made up for shortages caused