Iā Iuni 26, 1861, na auai ai Baxter i le Taua Faalemalo a Amerika, ma avea ai ma fomaʻi fomai tipitipi i le 12th Massachusetts Volunteer Infantry. Na auauna o ia seʻia oo iā Aperila, 1862, ina ua tofia o ia e avea ma fomaʻi tipitipi i le Army of the Potomac. Na auai o ia i le Taua i le Penisula, e aofia ai Taua i Yorktown, Hanover Court House, ma Seven Pines
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