 Nyorai kupfuurira kweiyi ndima - Watson akabata chinzvimbo chemutevedzeri wemutungamiriri wemauto muMarines mukati meHondo yeMexico. Akatungamirira chikwata cheMarine chakasimbisa uto raWinfield Scott nguva pfupi hondo yeMexico City isati yaitika. Watson akanga ashanda pasi paWinfield Scott muna 1813 uye akanga ari murwi wenguva refu weMarine. Watson navarume vake vakanga vakabatanidzwa kuDhivhizheni yechi4 pasi paBrig. Gen. John A. Quitman. Munguva yekurwiswa kwakakomba paChapultepec Castle musi waGunyana 13, 1847, Watson akaratidza hushoma, uye vazhinji veMarines ake vakapotsa chiito chakakosha, vakamirira vari muchitoro chekurwisa mirairo iyo isina kumbobvira yauya. Nokukurumidza pashure pokunge guta reMexico rapambwa navaAmerica, Watson akafa nezvikonzero zvomusikirwo. 