The pass was defended by 1,060 men under Lt. Col. Blas Villamor in trench works constructed over the last year with the assistance of Spanish engineers .
Lt. Col. Blas Villamor is tinio 's chielf of staff .
The pass was defended by 1,060 men under Lt. Col. Blas Villamor , Tinio 's chielf of staff , in trench works constructed over the last year with the assistance of Spanish engineers .