[2] He created the National Committee of Ostrovo and joined the Macedonian Defense.
Then, he set up his own armed group, acting in the Voras Mountains, Lake Vegoritida, Edessa and Skydra.
In June 1906, in an operation along with fellow Ostrovonites Stavros Chatzicharisis and Pantelis Theodorou they managed to exterminate the Bulgarian komitadji Tane Kliantsev who was terrorizing the Greek population of the region.
The action of Stogiannidis continued until 1908, when the Young Turk revolution stopped the Macedonian Struggle.
His actions are considered successful as he managed to drive back the Bulgarian komitadjis northern, notably to Tikveš and Almopia and as he protected the Greek element of the region.