Eliza describes her experiences, including two tours in the Mexican—American War and a period, still presenting herself as George Mead, in the
California gold rush, in her memoir
The Female Volunteer; or the Life, Wonderful Adventures and Miraculous Escapes of Miss Eliza Allen, A Young Lady of Eastport, Maine. question whether the book is historical or fiction. Others questioning the veracity of Eliza's purported exploits include Robert Walter Johannsen, in
To the Halls of the Montezumas: The Mexican War in the American Imagination and Jeanne T. Heidler, in
Daily Lives of Civilians in Wartime Early America: From the Colonial Era to the Civil War. In her emotional preface, Eliza warns parents against arranging marriages against their children's wishes or forbidding
love marriages and claims she undertook her adventures in the name of love. When that tour ended and Allen was not reunited with her fiancé, she signed up for a second tour, this time joining Gen.
Winfield Scott's Siege of Veracruz in March 1847. She suffered a severe sword slash to her shoulder at the
Battle of Cerro Gordo and wound up in a makeshift hospital at the hacienda of Don Alphonzo in
Mexico City—next to William, who had also been wounded at Cerro Gordo. Here, she does not reveal herself to William for fear of being discovered, but she does intrigue to test his love for her. According to Allen, Don Alphonzo's daughters had fallen for "George Mead"—and their father, unlike her own, had agreed to allow them to determine whether Mead might be an appropriate son-in-law. But Eliza, instead, tries to turn them toward William Billings. But William stands up to the test, vowing he cannot think of another but his true love back home. As William and "George" recover, the war also ends, and they march with their compatriots to the seaboard where they leave
New Orleans and then to New York. Eliza does not give up her male identity yet, though. She continues to hang around with William and his buddies, who ultimately gamble away their military pay at the hands of two men Eliza recognizes as slick swindlers while her friends do not. Having lost all their military pay, William and his friends decide to try their luck in the California gold rush—and again, Eliza follows. "George Mead" and his shipmates are a day behind William Billings, fortuitously, since Billings ship wrecks in the Straits of Magellan and he is among a handful of survivors picked up by the ship Eliza is travelling on. "Mead" helps to nurse Billings back to health. They arrive in
San Francisco, where "Mead"—who still has his military pay—sets up the group with tools for
prospecting. During this period, "Mead" and Billings rest side-by-side on a pallet, where "Mead" hears Billings tell of his love for Eliza. They and their mates regain some funds prospecting and wind up sailing from San Francisco back to Boston in September 1849. Allen rejoined her company at the
Battle for Mexico City. Allen then took part in the occupation of Mexico City until 1848. She traveled with her unit to New York and was discharged. ==After the war==