The Allied force comprised three Greek divisions of the National Defense Army Corps under Lieutenant General Emmanouil Zymvrakakis, plus one French brigade.

Fortified shelters lay under protective slabs of rock and a cluster of machine-gun emplacements rose like steps up the face of the cliff.

[3] At dawn (04.55) on 30 May 1918, Greek troops, in "a brilliant bayonet charge under withering fire,"[6] rushed the enemy trenches, the 1st (Serres) and 5th and 6th (Archipelago) Regiment capturing the heights of Skra at 6.30 from the outnumbered Bulgarians, while the 7th (Cretan) seized them between the two branches of the Liumnitsa River.

The battle was vital for progress on the Macedonian front, as the Allies finally broke the Bulgarian positions after a year of unsuccessful attacks.

The failure of a fresh Bulgarian counterattack to materialize in the days following the battle was one of the first significant signs of the enemy's depressed morale.

[6] This view, however, was not shared by General Guillaumat, commander of the Allied Army of the Orient in Salonika, whose opinion of the Greek troops was positive and who attached considerable importance to them.

"[6] In the words of the official British history, "Brilliant feat of arms as it was, few actions so small have made so much stir", as Guillaumat and the Greek press celebrated the success, which was a major morale boost and gave legitimacy to Venizelos and the pro-Allied cause in Greece, still bitterly divided over the National Schism.

Consequentially, in the final offensive in September 1918, which breached the German coalition's defences, there were Greek divisions at five points in the broad Allied line of attack.