Finally, after meetings of agents and the persuasion of the then Prefect of Etoloakarnania, the establishment of a joint acceptance group, called Athlitiki Enosis Messolonghi, was achieved at the beginning of 1931 (perhaps within March).

Its first vital potential consists of players mainly from Panetolikos and Olympiacos, while other sources also mention the participation in the merger of other smaller teams (Niki, Keravnos, Asteras, Dafni, Atromitos, etc.).

Its first board of directors consists of Messrs. Kaloulis, Katassos, Mores, Papoutsopoulos, Kantzouros etc., while its main players during the pre-war period were Dres (GK), Fakkas, Giannopoulos, Linardatos, Katsaitis, Zavitsanakis, Makedonopoulos, Galanis, Valakros, Valsakas, Vsaromakis, Stavropoulos Lampiris etc.

After a mediocre start, AE Messolonghi is slowly being organized, creating a strong team that is gaining experience and in 1934 is recording its top pre-war success, winning the championship of Etoloakarnania, defeating Panaitolikos Agrinio.

A few days later, administrations and players of the two unions, leaving aside their political passions and in the midst of the civil war, are the first to set the example of reconciliation and re-establish the historic AE Messolonghi.