Athenaeus (1854). “The Deipnosophists Or Banquet of the Learned of Athenaeus: With an Appendix of Poetical Fragments, Rendered Into English Verse by Various Authors and a General Index : in Three Volumes”, p.439
Woodrow Wilson (1916). “Wit and Wisdom of Woodrow Wilson: Extracts from the Public Speeches of the Leader and Interpreter of American Democracy, with Masterpieces of Eloquence”, Best Books
Attributed in Wash. Post, 18 Sept. 1898. According to the Oxford Dictionary of Quotations, this was "probably condensed from a long passage in E. A. de Las Cases Memorial de Ste-Helene (1823) vol. 4, 14 Nov. 1816; also attributed to Frederick the Great, in Notes and Queries 10 March 1866." The 1866 attribution to Frederick is worded "an army moves on (or by) its stomach."