1946 saw the official transfer of Greek manned RAF squadrons into the Royal Hellenic Air Force. In addition to the aforementioned Nos. 13, 335, and 336 Sqns., these also included the No. 355 Squadron RHAF with a variety of transport types, including the C-47, Avro Anson, and Wellington and the 345, 346, and 347 Flights using the Auster AOP and other utility aircraft for liaison.
Meanwhile, government opposition was on the rise and the formation of the Democratic Army of Greece led to the loss of control of much of rural Greece. The Greek National Army responded with Operation Terminus, but this was a failure. March 1948 saw the RHAF enter the action with attacks on landing strips set up by Communist forces to receive aid from Albania and Yugoslavia. Involvement by the United States led to the launch of Operation Dawn in April 1948, and this was supported by RHAF units with a total of 641 sorties with the loss of one Spitfire plus damage to ten more. Dakotas were utilized for leaflet and supply operations. The operation was successful but the withdrawal to northern border regions limited RHAF effectiveness due to a five mile stop line to avoid an international incident.
Source: Wikipedia

source: http://www.haf.gr/el/structure/units/ata/units/images/337_Spitfire_Lineup.jpg

source: http://www.largescaleplanes.com/articles/article.php?aid=1018