<prompt> Pedzisa mutsara unotevera: Palmer akaberekerwa muBuffalo, New York. Innis akabatanidzwa somukomana wekwaya pachechi yake yomunzvimbomo kutozosvikira apinda muchiuto. Akapinda United States Military Academy muna 1842. Akapedza kudzidza mukirasi ya1846 uye akagadzwa kuva mukuru mukuru wechipiri mu2nd U.S. Mounted Rifles. Akapinda muHondo yeMexico neAmerica semutevedzeri wekutanga uye akanongedzerwa kuhushingi uye nebasa rinoshamisa paHondo dzeContreras uye  <response>: Churubusco. Ushingi hwake hwaakaratidza paHondo yeChapultepec hwakamuita kuti akwidziridzwe kuva kaputeni. Muna March 1855 Palmer akasimudzirwa kuva mukuru mukuru mu 2nd U.S. Cavalry. 