On May 1, 1917, near the village of Hamilo in Paionia, on the then-known Ravine hill, the first victory of the Greek forces participating in the Macedonian Front during the First World War took place. The Greeks organized a defensive front and plans began to be made to attract and capture Ravine Hill. The task of attacking and capturing Ravine was assigned to the 2nd Battalion of the 1st Regiment of the Serres Division.The commander of the Battalion was Major Grigorios Goulianos. French forces also participated in the attack. The attack to capture Ravine faced many obstacles and was particularly difficult for Julian’s men, but his Battalion captured the fort at noon of the same day. The capture of Ravine was the bloodiest military conflict with heavy losses, but at the same time a brilliant Greek success. The stubbornness and militancy of the Greek warriors surprised the French allies. The prestige of the Greek Army rose and the way was opened for other success.