O'Malley was appointed assistant chief of staff in the anti-Treaty forces.

In February of that same year, Renvyle was burnt to the ground by anti-Treaty forces.

The town was raided at least once by anti-treaty forces during the Irish Civil War of 1922 to 1923.

During the succeeding Irish Civil War the fort was burned by anti-treaty forces in August 1922.

In 1921 he joined Éamon de Valera's anti-treaty forces and remained a critic of partition until his death.

The war had petered out by spring 1923, and the anti-Treaty forces laid down their arms in May.

Seemingly he was ostracised from the anti-treaty forces and referred to as "That bloody Englishman" due to his foreign birth.

In the ensuing Civil War, its members largely supported the anti-Treaty Republican forces.

In July 1922, anti-Treaty forces held the southern province of Munster and several other areas of the country.

How did Gray, top gun of big industry's anti-treaty forces become chief of a respected environmental group?