During the Nazi occupation of Greece, Grivas led a right-wing extremist organization known by the Greek letter X (Chi), which some authors describe as a band of terrorists and others call a
resistance group.

In his memoirs, Grivas will say that it was later British propaganda that blackened the good name of X.

At any rate, Grivas had earned a reputation as a courageous military leader, even though
his group was eventually banned.

Later, after an unsuccessful try in Greek politics, he turned his attention to his original home,
Cyprus, and to enosis.

For the rest of his life, Grivas will be devoted to this cause.