There is not much behind Greek junta.

It was an act to limit communist/Soviet influence, their stance was totally pro-Western and that's why CIA supported it. They would publish modernist hippie films like Woodstock (with some alterations). They are idolized by some Greek nationalists for building roads, advancing the economy...which is unproven.

To understand the Greek junta, you have to understand the Greek civil war and to understand the Greek civil war and concepts such as "patriotic commie" is hard for Westerners.

The last homegrown nationalist regime with a code of ethics was that of Metaxas.