As Ole writes there are many authentic recipes in Food Forum. However I will add a few here from "Confederate Camp Cooking".
Messmate Tomato-Corn Soup
2 cups chicken broth (or 2 chicken bouillon cubes in 2 cups boiling water)
2 cups canned tomatoes, cut up
2 cups whole kernel corn (drained, if canned)
1/4 teaspoon salt
1/4 teaspoon marjoram, basil, or oregano if available
dash of pepper
Boil up. Simmer, uncovered for 15 minutes.