Operation Flavius was a significant military operation conducted by the British SAS aimed at neutralizing perceived terrorist threats. On the day in question, intelligence had indicated that three members of the Provisional Irish Republican Army were planning to carry out an operation in Gibraltar. The SAS acted on this intelligence by intercepting the individuals' vehicle as they were travelling in the area. The operation commenced when the officers believed the suspects were preparing to initiate an attack, leading them to take immediate and lethal action.

The three individuals, Sean Savage, Geoffrey McIlroy, and Brian McGlinchey, were shot dead in a controlled operation. They were unarmed at the time of their death, leading to significant public and media backlash against the British government and military. The circumstances of their deaths raised questions about the rules of engagement and the protocols followed during such operations. Investigations ensued, and multiple debates unfolded surrounding the legality and morality of the SAS's actions.

Further revelations about the incident indicated that the SAS had violated standard operating procedures. The event became emblematic of the tensions between the British government and the Irish republican movement, representing the extreme measures taken during the conflict. It also showcased the complexities of counter-terrorism efforts and the ongoing strife in Northern Ireland.