After the initial phase of conventional warfare the conflict moved into a chapter reminiscent of the guerrilla/official reprisal struggle of the War of Independence. While Anti-Treaty Republican forces were responsible for atrocities it was the Free State which wreaked most havoc with 77 executions, extra-judicial killings (Ballyseedy) and unsanctioned murder (Oriel House). It was this phase of the conflict that led to the real bitterness that persisted for decades.