 Complete the following phrase:  On its becoming known that Napoleon intended to break the blockade of Ferrol as a prelude to his invasion, the Admiralty ordered Rear-Admiral Charles Stirling to join Calder and intercept the Franco-Spanish fleet on their passage to Brest. The approach of the enemy was concealed by fog. Finally, on 22 July 1805, the fleets came into sight. The allies outnumbered the British, but Calder ordered his fleet into action. In the ensuing 