Pic of the day. July 12, 2011.

A soldier rushes through a stream during a training exercise in Kenya.

The 4th Battalion The Rifles (4 RIFLES) were in Kenya undergoing intensive training to be the British Army's next Spearhead Lead Element - a rapid response force ready to tackle a world-wide crisis at 24 hours notice.

This can range from a major domestic terrorist attack to the evacuation of British nationals overseas.

Around 700 personnel left their Wiltshire base and were joined by other units including artillery and engineers for a five week intensive exercise at the British Army Training Unit Kenya, otherwise known as BATUK.

Photographer: Sgt Adrian Harlen