Of the four scenarios prepared by Truscott, Operation Buffalo called for an attack through Cisterna, into the gap in the hills and to cut Route 6 at Valmontone.
Af de fire scenarier, som Truscott forberedte, gik Operation Buffalo ud på et angreb gennem Cisterna, ind i hullet i bjergene og afskære hovedvej 6 ved Valmontone.