Battle of Castlebar

Battle of Castlebar
	Part of the Irish Rebellion of 1798
	; 1887 illustration of the battle
Date	27 August 1798
Location	Castlebar, County Mayo53°51′39″N 9°17′56″W / 53.8608°N 9.2989°W
Result	Franco-United Irishmen victory
Belligerents
France ; United Irishmen	Great Britain ; Ireland
Commanders and leaders
Jean Humbert	Gerard Lake
Strength
1,100	3,000–5,000; 14 cannon, incl. 4 curricle guns;
Casualties and losses
200–220; • 40 killed; • 180 wounded;	400 killed or wounded; 800 captured; 14 cannon; 8 standards; Baggage and ammunition looted; Official estimate:; 366; • 53 killed; • 34 wounded; • 279 missing;

The Battle of Castlebar was a military engagement of the Irish Rebellion of 1798 which occurred on 27 August 1798 near the town of Castlebar, County Mayo. A combined force of approximately 800 French troops and 2,000 United Irishmen rebels commanded by Jean Joseph Amable Humbert routed a British Crown force of 3,000–4,000 men led by Gerard Lake, 1st Viscount Lake in what would later become known as the "Castlebar Races" or "Races of Castlebar". During the battle, the French, although they had veterans in the ranks, fought in an exhausted state after long mountain marches, and the United Irishmen were exhausted for the same reason; Lake's army was in an advantageous defensive position but at the same time had a significant number of untrained Irish militiamen in their ranks, which routed in the face of the Franco-United Irishmen assault.