24 hours of legalization, as much as 1.5 million barrels of 3.2% ABW beer was sold, causing some to predict a "beer famine". Soon thereafter, in December of the same year, the Twenty-first Amendment to the United States Constitution repealed prohibition in general, but left the production of alcoholic beverages heavily regulated by federal, state, and local authorities. Included in these regulations was the imposition of a three-tier distribution system, in which a manufacturer of alcoholic beverages must go through a wholesale distributor to sell its product, rather than selling to retailers directly. Post Prohibition Although the Twenty-first Amendment allowed brewers to legally resume practicing their craft, many "dry" counties remained and many states failed to ratify altogether, which slowed the resurgence of the brewing industry. In addition, the many prohibitionists of the temperance movement were still quite vocal and were able to retain a large following despite the repealing of the eighteenth amendment. Before the American beer industry could attempt to re-establish itself, World War II began. This further inhibited the re-emergence of smaller breweries because much of the grain supply was rationed due to the war, forcing the breweries to use adjuncts such as corn and rice alongside the barley traditionally used in brewing. The prohibitionists saw a tantalizing opportunity to quell the efforts of the remaining breweries, insisting that the commercial brewing of beer squandered manpower, grain, fuel, and cargo space that should have gone towards the war effort overseas. Brewers responded to these accusations by extolling the benefits that brewer's yeast have on human health, namely their high vitamin B content. It was argued that the increase in thiamine in the diets of the soldiers and factory workers would improve performance on the battlefield as well as in the factory and that this increase sufficiently justified the need for beer. The American government decided that the benefits of the vitamin B in brewer's yeast, alongside the taxes coming in from beer sales, were enough to justify a request for fifteen percent of beer production for servicemen. Although America's breweries had the backing of their government, they still needed to capture the hearts and the wallets of the American people. In order to accomplish this, the major breweries banded together and launched the "Morale is a Lot of Little Things" advertising campaign. The campaign can be well summarized from the following 1942 magazine advertisement: "If you’re a