The first task that confronted John X was the existence of a Saracen outpost on the Garigliano River, which was used as a base to pillage the Italian countryside. John consulted Landulf I of Benevento, who advised him to seek help from the Byzantine Empire and Alberic I of Spoleto. John took his advice and sent papal legates to Berengar, various Italian princes, as well as to Constantinople, seeking help to throw out the Saracens. The result was a Christian alliance, a precursor to the Crusades of the following century. The forces of the new Byzantine "strategos" of Bari, Nicholas Picingli, joined those of various other south Italian princes: Landulf I of Benevento, John I and Docibilis II of Gaeta, Gregory IV and John II of Naples, and Guaimar II of Salerno. Meanwhile, Berengar brought with him troops from the northern parts of Italy, and the campaign was coordinated by John X, who took to the field in person, alongside Duke Alberic I of Spoleto.