Brant's ambush eliminated Lochry's Pennsylvania militia force and forced the cancellation of Clark's planned campaign against Detroit in 1781.
Key Facts
- Date
- August 24, 1781
- Pennsylvania militiamen engaged
- ~100 men
- Indian attackers (approx.)
- ~100 men
- American casualties
- All killed or captured
- British/Indian casualties
- 0
- Clark's original force
- ~400 men
By the Numbers
Location
Cause → Event → Consequence
Brigadier General George Rogers Clark planned an expedition from Fort Pitt down the Ohio River to capture Detroit, the British regional headquarters, aiming to end British support for Indian raids on the frontier. Archibald Lochry led approximately 100 Pennsylvania militiamen behind Clark's main body, trying to catch up. Joseph Brant, leading an Indian force assembled to counter Clark, intercepted messengers and learned of Lochry's smaller, isolated detachment.
On August 24, 1781, near present-day Aurora, Indiana, Joseph Brant's Indian force ambushed Lochry's Pennsylvania militiamen as they landed to feed their men and horses along the Ohio River. The engagement was brief and one-sided: all of Lochry's approximately 100 men were either killed or captured, while Brant's force suffered no casualties whatsoever.
The destruction of Lochry's detachment deprived Clark of a significant portion of the manpower he had already struggled to recruit, leaving him unable to muster sufficient forces for the Detroit campaign. Clark was forced to cancel the expedition entirely, allowing Britain to retain its regional headquarters at Detroit and continue supporting Indian military operations on the northwestern frontier.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Archibald Lochry.
Side B
1 belligerent
Joseph Brant.