The period from 1294 until 1307 saw England engaged in wars with the French, the Welsh and the Scotch. In only three years, 1299, 1302, and 1305 was there no campaign. The object of this dissertation is to examine the ways in which the country was mobilised for this exceptional military effort, and to investigate the means by which the wars were financed. Various aspects of both the military and administrative history of this period have been dealt with by Tout, Morris and others, but much of the surviving evidence has not been fully used, and no historian has attempted to treat the subject as a whole.