The period 1970–1971 played for the first time in B Ethniki, where he remained until 1976.

In the early 1980s, after the restructuring and professionalisation of football, the AOK relegated to Delta Etniki, and from there to the Local League of Karditsa, from where he returned to Delta Ethniki in 1987.

The "blue white" go up in the Gamma Ethniki for the first time in club history.

The team returned to the Football League 2 for the 2013–14 season.

The club has a bitter rivalry with their local neighbours Anagennisi Karditsa.