Sounds like a challenging search. I did find the name in a surname history website which you have probably seen already. Handibode's you could correspond with.www.ancientfaces.com/surname
It is an ancient name for sure as the history goes well back in time in a variety of countries.
I checked a British website and found no Handibode's at all.
You can check with the National Archives in Kew for a link to military records.
Just a thought if there were any foreign troops in Ireland, German Hussar's could be hired to fight in anyone's wars.