Do your bit! Save food.

First World War British food control poster issued by the Ministry of Food (No.54). It features a shoulder-length depiction of a British infantryman, looking directly out of the poster, with his right hand raised and formed into a clenched fist. The image is framed top and bottom with the title text printed in red. The poster urges the viewer to conserve food as part of the war effort. he British Prime Minister Lloyd George argued: "You must ration...I would certainly urge that there should be a very complete system of rationing...and everybody must be put on the same footing", nationwide rationing was only introduced as late as April 1918. During World War I, Britain declared a blockade of Germany. Berlin responded with its own U-boats (submarines) to sink ships carrying military equipment or food to Britain. Food becoming more important as the war continued, especially after the declaration of unlimited U-boat warfare. In about two years, the United Kingdom had just six weeks' food left and, therefore, had to ration its food supplies. Rationing started at the end of 1917 with sugar and butter remaining on ration until 1920.