The Free State's forces took the south and west of Ireland with landings from the sea. Seaborne landings were the first proposed by
Emmet Dalton and then adopted by Michael Collins. Their plan was to avoid the hard fighting that would inevitably occur if they advanced overland through Republican held
Munster and
Connaught. To this end, they commandeered several civilian passenger ships to transport troops. They were the
Arvonia and the
SS Lady Wicklow They were escorted by British naval vessels The first naval landing took place at
Clew Bay in
County Mayo on 24 July and helped re-take the west of Ireland for the Free State. This force, consisting of 400 Free State soldiers, one field gun and an armoured car under Christopher O'Malley, re-took the Republican held town of
Westport and linked up with another Free State column under
Seán Mac Eoin advancing from
Castlebar. A Free State column also dispersed anti-Treaty IRA forces in
County Donegal in Ireland's north-west. The largest seaborne landings took place in the south. Ships disembarked about 2,000 well equipped Free State troops into the heart of the "Munster Republic" and caused the rapid collapse of the Republican position in this province.
Paddy Daly and the
Dublin Guard landed at
Fenit in
County Kerry on 2 August and fought their way into
Tralee at the cost of 9 killed and 35 wounded. They were reinforced on 3 August, by around 250 pro-treaty IRA men from
County Clare, embarked from
Kilrush to
Tarbert in fishing boats. The Free State forces rapidly occupied the towns in the county but the Republican units in Kerry survived more or less intact and would fight a determined guerrilla campaign for the remainder of the war. If the Munster Republic had a capital, it was
Cork and the largest seaborne landings of the civil war were aimed at taking that city. Emmet Dalton led 800 troops, with two artillery pieces and armoured cars, who landed at
Passage West, near the city, on 8 August. A further 200 men were put ashore at
Youghal and 180 troops landed at
Glandore. There was some heavy fighting at
Rochestown and
Douglas in which at least ten Free State and 7 Republican fighters were killed and at least 60 men on both sides were wounded, before the outnumbered and outgunned anti-treaty IRA retreated into the city. However, they did not try to continue the fighting Cork itself, partly in order to spare the civilian population, but instead burned
Charles Barracks, near Kinsale, which they had been occupying, and dispersed into the countryside. The Free State landings in Munster coincided with an attempt by anti-Treaty guerrillas to isolate Dublin by destroying all the road and rail bridges leading into the city. However this operation was a complete failure with over 180 republicans being captured at a cost of only two Free State soldiers wounded. On 10 August, Free State troops entered Cork city unopposed, the last city to fall in the "Munster Republic".
Liam Lynch, the Republican commander in chief abandoned
Fermoy, the last Republican held town, the following day. In leaving Fermoy, he issued an order to troops under his command to stop trying to hold fixed positions and to form flying columns to pursue guerrilla warfare. ==Aftermath==