At the outbreak of the Second World War British Army battle drill – developed during the First World War and revived by the then Lieutenant-General Harold Alexander in I Corps after the evacuation of Dunkirk – was the method of teaching infantry minor tactics. Wigram played the leading part in spreading this training technique to the whole of the Home Army. While studying his troops he concluded that on average a British Army platoon would almost invariably be 25% "gutful," men who would go anywhere and do anything, 50% "sheep," men who would follow closely behind if well led, and about 25% "cowards," who quickly ran or became ineffectual once the fighting started.