 After settling some controversies with the bishops of Mainz and Würzburg, the Pope convinced Henry II to return to Italy for a third campaign to counter the growing power of the Byzantine Empire.In 1022, Henry II set out down the Adriatic coast for southern Italy commanding a large force.He sent Archbishop Pilgrim of Cologne ahead with a slightly smaller army along the Tyrrhenian littoral with the objective of subjugating the Principality of Capua.