A massive fleet has moved on Portsmouth, but the southern English city is not under threat. The ships from 36 nations have gathered there to join in a ceremony marking the 200th anniversary of the Battle of Trafalgar.
The opposing sides are referred to as the blue team and the red team so as not to offend the French who are among the participants.
Central to the six-day long commemoration of one of the greatest sea battles in history will be the Victory, the flagship of the English fleet Admiral Horatio Nelson.
He led the English to triumph over a larger French/Spanish fleet but was fatally injured.
The Victory is still in service with the British navy and has been carefully maintained.
The festivities will include a re-enactment of the battle which will be watched by Queen Elizabeth.