One of the most powerful weapons during WWII and indeed any other war was propaganda. It was however not only the governments that used propaganda, private also used propaganda, albeit in a more subliminal manner, in their advertising campaigns.
Some of these ads would put 21st century advertisers to shame. following are some examples of the ads allied style.
Santa Claus Has Gone to War!” World War II propaganda (1942)
Have a coke and a smile even at war
“This is no time to be FRAIL! Bread is basic” – Fleishmann’s Yeast ad in ‘The Saturday Evening Post’, December 1942