Some of the ways that Ireland provided assistance to the Allied Powers included providing food and other supplies to Britain, allowing Allied aircraft to use Irish airspace, and providing intelligence information. Ireland also provided medical assistance to Allied soldiers who were wounded in the war.
On the other hand, some Irish citizens fought on the side of the Axis Powers. This was particularly true of members of the Irish Republican Army (IRA), which was a paramilitary organization that was opposed to British rule in Ireland. Some members of the IRA believed that Germany would help them to achieve their goal of an independent Ireland, and so they fought on the German side.
Overall, Ireland's role in World War 2 was complex and multifaceted. While the country officially remained neutral, it did provide assistance to both sides of the conflict. Irish citizens also fought on both sides of the war.