This chapter considers evidence of loyalist paramilitary activities and resistance in County Donegal in the early 1920s. It investigates why a vibrant UVF movement, active in the county from 1912 to 1914, did not mount a sustained resistance to the IRA in the county from 1920 to 1923. It suggests that low levels of republican violence in the county during the Anglo-Irish War required a more limited response and goes on to demonstrate that Donegal’s loyalists prioritised the defence of Londonderry during a critical period in 1920. Unlike Monaghan, a number of Donegal’s outstanding UVF leaders were killed during the First World War or did not return home. There is also some evidence that erstwhile units of the Donegal UVF quickly and collectively allied themselves with pro-treaty forces during the Civil War (26 June 1922–24 May 1923). The exception was Pettigo, where loyalists targeted republicans in the wake of the British occupation of the village over a seven-month period, during which time they also campaigned to be included in the new Northern Ireland.