He cooperated with Stefos Grigoriou, and along with the guerrilla bands of Ioannis Terzis and Nikolaos Platanias ("Captain Lachtaras") gave battle on 3 July 1907 against a detachment of IMRO, in which the Bulgarian chieftain [[Atanas Krshakov]] was killed.

[3] During the Balkan Wars (1912–1913) he operated for a year in Western Macedonia as the lieutenant of Georgios Katechakis,[4] taking part in one of the so-called First Battle of Nicopolis (known by its ancient name) in the area of Preveza in Epirus.

The main action occurred on 19 October 1912, after Greek troops began marshalling on the 16th, prefatory to Greece's declaration of war on the 17th.

[5] In November 1912, one Georgios Tombras alias "Polyhniatis" joined others in sending a letter detailing the state of Turkish defences at Moudros that led to the Hellenic Navy taking part in the Liberation of Lemnos (the annexation of the Greek-speaking island by the Kingdom of Greece) under Pavlos Kountouriotis.

It is not clear whether this Georgios Tombras was the same person as the makedonomahos fighter, whether he was a spy for the Greek military, or what other role, if any, he played in the subsequent fighting.