Mr Hammond and Mr Le Drian visited French aircraft carrier the Charles de Gaulle, then were briefed by officers at HMS Bulwark.
Mr Hammond said the exercise was symbolic of the promise made in 2010.
It's a real, concrete delivery of that collaboration in the form of an enhanced military capability that gives our two countries additional force, additional capabilities to project military power in support of our national policies and international obligations.
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It will be cold and frosty across the north of the UK tonight, with some icy patches in the west.
The quartet failed to impress with their version of Something About The Way You Look Tonight.
Temperatures are expected to rise today and tomorrow, with heavy rain expected tomorrow. Melting snow plus heavy rain could mean trouble.