Although from the Republic, my father was in the fire service in Northern Ireland during World War 2; my mother, 2 uncles and an aunt all worked in England; and according to this book, 160,000 Irishmen fought for the Allies - yet, the perception of many during, and especially after the War was that Eire had had an easy time as a Neutral, and that it was full of Nazi sympathisers. Indeed, there was a press report in the USA at one point saying that there were lots of Japanese nationals on spying missions in Ireland - ignoring that they might just stand out a bit....
I am not a fan of Eamon de Valera, but his actions before, during and after WWII suggest, in this at least, that generally he represented the Irish people's stance - his duty in a democracy. (One cannot help but think of Tony Blair's contrasting approach.) It is arguable too that his resisting demands from Churchill and Roosevelt were, from a military standpoint, critical to Ireland, and therefore also Britain, not being overrun by Germany. Indeed, much as I admire Churchill with regard to WWII, he seems to have been blinded to the risks of Eire's openly joining the Allies by his own prejudice against the country.
The most interesting detail lies in the extraordinary degree of help Ireland gave to the Allies in terms of passing on intelligence, weather reports, etc; and letting the vast majority of downed Allied planes and their crews return to their bases, while interning every single German participant.
Anyone who is interested in the history of Ireland, the UK, the USA or WWII is likely to find much of interest and some revelations here.