Complex sentence: From there they were tied to the tailgate of a lorry, bound to each other, and dragged along the roads to Drumharsna Castle, the headquarters of the Black and Tans where they were beaten again.
Split into simpler sentences: From there they were reportedly tied to the tailgate of a lorry and dragged along the roads. At Drumharsna Castle, the headquarters of the Black and Tans they were beaten again.