The Radfan Campaign was a series of British military actions during the Aden Emergency. It took place in the mountainous Radfan region near the border with Yemen. Local tribesmen connected with the NLF began raiding the road connecting with Aden with the town of Dhala. In January 1964 the local army sent three battalions supported by the RAF to restore order. Trouble flared up again and in April British ground troops were sent in; by May they had taken the main rebel stronghold and the revolt had been suppressed. The NLF then switched its attention to Aden itself.