Palmer left Ithaca on September 3, 1862, following the 109th New York Volunteer Infantry Regiment to
Laurel, Maryland and leaving her two daughters in the care of relatives. The regiment initially served at
Annapolis Junction, Maryland, guarding the railroad to Washington, D.C. In one anecdote she told, during the
Siege of Petersburg Palmer wanted to send a seriously ill patient to Washington but the doctor in charge objected. She managed to obtain a ticket for him and sent him off, leading to an angry argument with the doctor the following day. At some point she acquired the nickname "Aunt Becky"; it is not clear if this nickname was applied to her during her civilian life before the American Civil War, or if the nickname was given by her patients or colleagues. One secondary source claims that patients often called her "Mother", a nickname she disliked, and she encouraged using the different nickname after a soldier suggested she looked like his Aunt Becky. ==After the Civil War==