as best as they could. The Greek army would concentrate the remainder of its units for a counterattack on the weakest Bulgarian flank. The Greek disposition was as such: On the Greek left the 10th Infantry Division occupied the area around Axioupoli, an Army Section (disbanded when the war started); the 3rd and 5th divisions occupied the area between the Axios and Gallikos rivers; the 4th Division occupied the territory between the Gallikos River and the Thessaloniki-Serres highway; the 1st Division positioned themselves between lakes Langada and Volvi; and the 7th occupied the area between Lake Volvi and the Gulf of Orphanos. The 2nd and 6th divisions were held as reserve north of Thessaloniki, while the Cavalry Brigade was stationed in Sindos west of Thessaloniki. On 15 June, the Bulgarian Army took orders to advance towards Thessaloniki. The Greeks stopped them and by 18 June an order for general counterattack was issued. The next day, the 10th division attacked toward the heights of Kallinovo north of Lake Artzan while the 3rd, 5th, 4th and 2nd divisions attacked toward the area of Kilkis. The 6th and 1st divisions attacked toward Lachanas and the 7th division toward the Karakoli saddle and Nigrita. The Cavalry brigade operated between the 10th and 3rd divisions. Kilkis At Kilkis, the Bulgarians had constructed strong defenses including captured Ottoman guns which dominated the plain below. The area was defended by the Bulgarian 3rd division, minus its 1st brigade. Kilkis itself was garrisoned by the 2nd brigade (Colonel Ribarov) of eight battalions, supported by several artillery batteries. Against them 38 Greek battalions attacked with 100 guns. The 3rd brigade (Colonel Kavarnaliev) covered the sector between Lake Doiran and Lake Ardzan. Following the outbreak of hostilities, reinforcements started arriving on the Bulgarian side, initially in the form of the 10th cavalry regiment which covered the flanks of the Kilkis position, and the Serres brigade which started boarding trains on 18 June. The Greek divisions attacked across the plain in rushes under Bulgarian artillery fire. On 19 June, the Greeks overran the Bulgarian forward lines everywhere but suffered heavy losses as the Bulgarian artillery fired incessantly with great accuracy guided by their observation on the hills of Kilkis. The 5th division alone suffered some 1,275 losses on that day. On 20 June, despite having committed all forces and advancing steadily, the Greeks failed to break the Bulgarian defence. The Greek