In 1136, Lothair II and the duke of Bavaria, Henry the Proud, descended the peninsula to support the three rebels. Ranulf, with Robert and Henry, took a large contingent of troops to besiege the peninsular capital of the kingdom, Salerno. Salerno surrendered and the large army of Germans and Normans marched to the very south of Apulia.
In 1136, Lothair II and the duke of Bavaria, Henry the Proud, descended the peninsula to assist three rebels. Ranulf, with Robert and Henry, led a large contingent of troops to besiege Salerno, the capital city of the kingdom. The army then advanced to the southernmost region of Apulia.