This is a PDF document that is a research paper written by Bernard J. Brabin, a researcher at the Liverpool School of Tropical Medicine. Brabin demonstrates that malaria played a crucial role in devastating millions of soldiers in World War I. There were large gaps in knowledge about malaria in 1914: scientists knew of the potential methods of malaria transmission but the military underestimated the disease. This article puts together pieces of information from maps, old books, and limited statistics, to analyze the magnitude and effect of malaria in WWI. Brabin concludes that WWI became an experiment in political and medical practice and exposed the gaps in knowledge on malaria.