The idea that war was a football match writ large was commonly expressed in Britain during the First World War. This article looks at the attitudes and actions of the English Rugby Football Union and its supporters before, during, and after the First World War to examine how such beliefs were utilized by sports organizations and the impact they had on the military and on society as a whole. Rugby union football was viewed both by its supporters and general observers alike as the most enthusiastic and committed sporting supporter of the war effort; the article explores rugby's overtly ideological stance as a means of shedding light on broader discussions about the cultural impact of the war, such as in the works of Paul Fussell and Jay Winter, and about the continued survival of traditional and Edwardian ideas of patriotism among the English middle classes in the immediate post-war period.