1769-1821 1815 administration agathon-jean-françois architects arsènelacarrière attitudes battleof battleof(louisiana:1815) biography cabinetofficers contemporariesnapoleon emperors fain filibusters france french history latour louisiana militaryengineers militaryparticipation neworleans participation psychology relationswithcabinetofficersnapoleon travel travellatour unitedstates