LONDON (Reuters) – Britain will commit 20,000 military personnel to serve across Europe in a major NATO exercise in the first half of this year, as well as warships and fighter jets, the defence ministry said on Monday. The deployment includes 16,000 British army troops who will be based in Eastern Europe from February to June, an aircraft carrier strike group and F35B Lightning attack jets and surveillance planes. NATO’s Exercise Steadfast Defender 24 marks the Western alliance’s 75th year. “I can announce today that UK will be sending some 20,000 personnel to take part in one of NATO’s large…