longest military occupation

Resurrecting a monstrously old thread here, but I think the most accurate answer would be Ireland. It had a nationalistic identity before the Norman Invasion and maintained it throughout the entire 800 years of occupation (which in parts has continued to this day). Unlike most examples the lines are pretty clear cut as both the invader and the invaded were (or are) islands. It was never seen as a mere extension of Britain and the Irish people were always culturally considered a separate people. Granted, it wasn't a united land when the Normans first invaded, but it had been a united land not long before that and the people were considered part of the same cultural heritage.

If one day greeks returned  to anatolia, is this mean a new occupation? or finishing occupation of  turks? I think If we dont limit occupation with militaristic way, It  would realy turn a bad supprise.

isnt occupation a militaristic term?

i will second that, the occupied never accepted their overlords. when a people accept their occupiers then the occupation ends.

I think there have been instances where a peolpe have invited others to occupy their land to free themselves from tyranical rule. (sorry, dont have references, can't remember too well. maybe someone else can. I think the people were syrians 

The term "occupation" is inapropriate here.