Afterwards, the Turkish forces moved on Nafplio and then to reinforce the Turkish garrison at Tripoli, which was being besieged by the Greeks. Despite their superior numbers and having taken the towns of Nafplio and Argos, the Turks could not or would not take their citadels, possibly due to Mustafa's orders to hurry to the relief of Tripoli, and partly due to problems with his guns, which were suitable for anti-personnel operations but not the reduction of the strong Venetian-engineered fortifications in the Peloponnese. The Turks brought thirty artillery pieces with them and trained gunners, but the artillery seems to have been of sub-standard quality and by the end of the Siege of Tripoli, only seven pieces were found to be in working order.