In 1963, the main political leaders in Aden were attacked by grenade as they waited to board a plane at Aden Airport. This first significant terrorist attack was succeeded by a series of attacks in the following years.
By 1965, the violence had increased, with the terrorists becoming more unpredictable than in previous targeted attacks. The National Front for the Liberation of Occupied South Yemen claimed responsibility for these acts of terrorism.
In response to the increase in violence, The Cameronians were sent to Aden in 1966. Their role was made clear from the outset by the Commanding Officer, Lieutenant Colonel D.B. Riddell-Webster; the soldiers were to provide internal security, protecting locals from terrorist attack. There was to be no indiscriminate firing of weapons, and local people were to be treated with courtesy.
Soon after arriving in Aden it became clear to the soldiers that they were in difficult territory. The nature of the attacks made it necessary for soldiers to remain alert at all times. This vigilance combined with good soldiering led to a decrease in serious incidents.
The Aden campaign was a success for The Cameronians. They survived over 100 grenade attacks and, though there were casualties, only one soldier was killed. This soldier, Rifleman McLaren, was the last to lose his life serving with The Cameronians (Scottish Rifles).