Source: Translations, The Aeneid of Virgil (1866), Book XII, p. 465
“For the helmsman is recognized in the tempest; in the warfare the soldier is proved.”
Treatise VII - On the Mortality http://books.google.com/books?id=8fUYJKWWe80C&q="for+the+helmsman+is+recognized+in+the+tempest+in+the+warfare+the+soldier+is+proved"&pg=PA966#v=onepage
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Cyprian 7
Bishop of Carthage and Christian writer 200–258Related quotes

As quoted in Quotes for the Air Force Logistician, pub. Air Force Logistics Management Agency (2001), p. 115

“Where the battle rages, there the loyalty of the soldier is proved.”

Canto I, stanza 31.
The Lady of the Lake http://www.gutenberg.org/etext/3011 (1810)
Pure War. New York, NY, U.S.A.: Semiotext(e), 1983. p. 18

Letter to Abraham Lincoln (5 December 1863); As quoted in Black Union Soldiers in the Civil War, by Hondon B. Hargrove, p. 108

Statement issued at Nuremberg, 1946. Quoted in "The Trial of the Germans" - Page 341 - by Eugene Davidson - History - 1997

Subjugation of the Philippines Iniquitous (1902)