http://en.wikipedia.org/wiki/Irish_neutralityThis link has interesting information on Ireland's involvement due WW2 where it was bombed by the Luftwaffe ....and at times german and us/raf were interned as POWs effectively when they bailed out or crashed / landed ......tho some were allowed to return to their services - mostly the US/RAF personnel.
Without Ireland in WW2 on the allied side, would the war been any much harder i wonder?
The staging flights from the US to Ireland ( and aslo vice versa) surely helped transport new aircraft to the RAF and Europe?