be in the immediate neighbourhood of Gibraltar. The Spanish civil war of 1936-1939, though it led to some tension at Gibraltar, never constituted an active threat to the fortress, even when fighting occurred in the immediate vicinity of Gibraltar, at the time when the Nationalists advanced from the Seville area towards Malaga in the winter of 1936-1937. Possibility of civil disturbances in Gibraltar itself 6. The Security Service consider that serious civil disturbances amongst the population of Gibraltar itself are unlikely.