This 1943 U.S. Army instructional film, made with Hollywood animators and the voice of Mel Blanc as Private Snafu ,  provides interesting insight into possible concerns of overseas American troops.

During WWII, the government rationed foods including sugar, butter, milk, cheese, eggs, coffee, meat and canned goods. American families were encouraged to can their own vegetables in order to save commercial canned goods for the troops.

Additionally, with a shortage of labor and transportation, limited amounts of fruits and vegetables made it to market. With ~ 20 million patriotic citizens planting gardens  to provide their own fruits and vegetables, “Victory Gardens made a significant difference in the war effort.