The heroism of Regiment Fitz-James, and two commanders of it, is told in the 1779 issue of Hibernian Magazine:
Ambitious Fred'rick's savage troops can tell
Where one stout legion of Hibernian blood
The fire of all the Prussian arms withstood;
Led by the Betagh twins, bright twins in fame,Their goodness, valour, and their skill the same--
* * *
And when, with half his men, one brother fell,
The next, (a tale incredible to tell!)
With the small remnant of his slaughter'd band,
Their way cut thro' the Prussians, sword in hand.
Charm'd with such feats, the King withheld his fire,And let these heroes unassail'd retire;
Had search made for their leader o'er the field,
That he might to his corpse all honours yield;
To pieces hew'd, his corpse was sought in vain,
Amidst the bleeding heaps of mangled slain."
(quoted from pg. 583, History of the Irish Brigades in the Service of France, by J. C. O'Callaghan)