Key Facts
- Date
- Night of 11–12 June 1982
- Conflict
- Falklands War
- Operation type
- Brigade-size night assault (3 simultaneous battles)
- Concurrent battles
- Mount Longdon and Two Sisters
- Strategic result
- British control of all heights above Stanley
Strategic Narrative Overview
On the night of 11–12 June 1982, British forces launched a coordinated Brigade-level assault on three Argentine-held hilltop positions simultaneously: Mount Harriet, Mount Longdon, and Two Sisters. These night battles were part of a deliberate strategy to dislodge Argentine defenders from the high ground encircling Stanley and compress their defensive perimeter.
01 / The Origins
Argentina seized the Falkland Islands in April 1982, asserting a long-standing territorial claim against British sovereignty. Britain dispatched a naval task force to retake the islands. After establishing a beachhead at San Carlos, British forces began advancing overland toward the capital, Stanley, confronting a series of Argentine defensive positions on the surrounding hills.
03 / The Outcome
British troops captured Mount Harriet, along with Mount Longdon and Two Sisters, securing all the heights above Stanley. With their defensive positions overrun and further resistance untenable, Argentine forces on the Falkland Islands surrendered on 14 June 1982, ending the conflict and restoring British administration over the islands.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.