World War One was a very active war. It wasn't something taken slow, as many soldiers, not only American, had to either eat on-the-go, or eat in a trench they cleared or a base they're holding. read more
By World War I, canned food was widely available, and the United States was no exception. American soldiers were issued a canned concoction of beef bouillon and wheat; chocolate and condiments, in the form of salt and pepper, complemented the meal. Essentially, boiled to death meat with wheat to add flavor and last long. read more