Kammala jumla mai zuwa: Wilshire ya shiga rundunar sojojin Union a matsayin babban jami'in a cikin Daruruwan da ashirin da shida na Regiment, Illinois Volunteer Infantry, kuma ya yi aiki daga Yuli 16, 1862. Bayan Siege na Vicksburg, an aika da rundunarsa zuwa Arkansas da kuma
Kamfanin Little Rock karkashin jagorancin Major Janar Frederick Steele. Ya yi murabus Yuli 16, 1864 saboda dalilai na kiwon lafiya.