Kitchener’s appeal recruited over 750,000 British soldiers in two months.

Evidence

Whether the trick was provoking a sense of duty or subtle fears of German invasion or simply presenting the image of the great man himself, the initial August appeal was extraordinarily successful. Within a month, an astonishing 30,000 men a day were signing up at recruitment offices. By October, over 750,000 had joined the British Army, creating, in two months, an infantry larger than America’s current active force. Lord Kitchener now had his army. — Tim Wu, The Attention Merchants, 136