Robert and Roger first invaded Sicily in May 1061, crossing from Reggio di Calabria and besieging Messina for control of the strategically vital Strait of Messina.
Robert ja Roger tungisid esimest korda Sitsiiliasse mais 1061, ületades Reggio di Calabria ja piirates Messinat, et kontrollida strateegiliselt elulist Messina väina.