The oath was to establish a Republic, where did it mention 32 counties? The Civil War was over having to make an oath of allegiance to the King of Great Britain, more than it was about partition.They committed treason when they accepted the Anglo Irish treaty . They swore an oath to the 32 counties of Ireland not 26. There was only a mandate for 32 counties and not 26. There was no vote by the people on the treaty. there was a vote in 1918 and the mandate was there for a 32 county all Ireland.