When the assault on Coriano was resumed on the 12th, led by two armoured divisions with heavy artillery support, these forces pushed westwards; their goal was to pass through towards the town of Montescudo, about two miles from the Sanmarinese border.
Sassofeltrio borders the following municipalities: Chiesanuova (San Marino), Faetano (San Marino), Fiorentino (San Marino), Gemmano, Mercatino Conca, Montegiardino (San Marino), Monte Grimano, Montescudo, San Leo, Verucchio.