The forts were well supplied with artillery, totaling some 102 pieces (most of them 87 mm).[10][11] By December 1912, both sides were reinforced: the Ottomans received part of the Vardar Army, retreating after the Battle of Monastir, bringing their forces up to some 35,000, while the Greeks also brought up the 2nd Division from Macedonia and a number of volunteer regiments, for a total of 25,000 men.[10] The Greeks launched a first attack on the fortress area on December 14.