The campaign objective for the French was to take either London or Oxford but with the destruction of his cavalry and attrition to his infantry, the emperor has decided to cut his losses and evacuate the army back to Boulogne. To be fair, Rob has played a great game keeping the French army bottled up and unable to reach the interior of the country where they may have been able to out manoeuvre the smaller British force - not to mention the fact that he has trounced me three times on the battlefield!
The French must retreat to Bournemouth where they may evacuate up to 2 Divisions per turn (there are currently 7 Divisions) to Boulogne. The British are now allowed to stack up to 3 Divisions in any town (previously it was 2) which gives the potential for a bigger battle. Rob needs to judge the optimum time to attack whilst I must try to save face by bringing the army home as intact as possible.