Deception Island incident
The Deception Island incident took place in February 1953 when a group of British Royal Marines landed on Deception Island in Antarctica, took two Argentine sailors prisoner and destroyed both an Argentine Navy's base and nearby Chilean base. == Background == In 1943, the United Kingdom launched Operation Tabarin, with the goal of asserting its claim to a portion of Antarctica, which was also claimed by both Argentina and Chile.
Source: Wikipedia — Deception Island incident (CC BY-SA 4.0)