>>17981123
Battle of the Yellow Ford is probably the best one; a larger English Army commanded by Henry Bagenal (Marshal of the Royal Army in Ireland) faced off against Hugh O'Neill's smaller force.
O'Neill and Bagenal were rivals, because O'Neill was fucking his sister and Bagenal wanted to rule Ulster himself for England rather than see O'Neill rule it as an Irish Gael. The two armies met, and O'Neill decimated them; he used roaming bands of guerillas to hassle and exhaust the army as it travelled, then split the English forces in two and hit them hard with musket fire. Bagenal died, most of the English army died or scattered, and O'Neill lost very few soldiers.
Curlew Pass was another one; an English army was attacked as it passed through the Curlew Mountains, and it too was shattered. It's a battle famous for Irish Gallowglass troops charging the English cavalry and coming out victorious.