<prompt> Pedzisa mutsara unotevera: Akashanda muvarwi paSavannah, Georgia somutevedzeri wechipiri weTatu Artillery kusvikira muna 1846, paakagadzwa nokuda kwebasa rokunyora. Akakwidziridzwa kuva First lieutenant musi wa18 June 1846, uye akatora chikamu muHondo yeMexico neAmerica; akanga aripo kuTampico uye  <response>: Vera Cruz. Beckwith akabatanidzwa muPacific Railroad Survey kubva muna 1853 kusvika muna 1857 naJohn Williams Gunnison. Zvinokosha kuti First Transcontinental Railroad yakatevera nzira yaakarumbidza. Mushumo wake, waisanganisirawo kuongorora kwakawanda kweGreat Salt Lake, waiva nemashoko akawanda nezvezvirimwa, mhuka, mamiriro okunze, uye nzvimbo dzenyika dzaakanga aongorora. Akatora nzvimbo yaGunnison somutungamiriri weongororo pashure porufu rwake, uye pachake akakurudzira nzira yechitima. Akabatanidzwawo mukuvakwa kwemigwagwa yemauto muNebraska neKansas, pakati pa1857 na1859. 