The Battle of Skra-di-Legen (Skora di Legen) was a two-day battle which took place at the Skra fortified position, located northeast of Mount Paiko, which is north-west of Thessaloniki, on May 29–30, 1918, on the Macedonian front of World War I. The battle was the first large-scale employment on the front of Greek troops of the National Defense Army Corps (Greece, united after the National Schism, had joined the war in summer 1917), and resulted in the elimination of a whole enemy regiment and in the capture of the heavily fortified Bulgarian positions.

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

• the Archipelago Division under Major General Dimitrios Ioannou,
• the Crete Division under Major General Panagiotis Spiliadis,
• the Serres Division under Lieutenant Colonel Epameinondas Zymvrakakis.

The 5th and 6th Regiments from the Archipelago Division were in the center, the 7th and 8th Regiments from the Crete Division were on the right flank and the 1st Regiment of the Serres Division was on the left flank.