Journey to Afghanistan's 'valley of death'
12 December 2011 Last updated at 09:41 GMT
Helmand Province has long proved a security concern for Nato-led forces operating in Afghanistan, where Taliban fighters still pose a daily threat to soldiers and civilians.
In October British troops took over from US forces in an area know as the 'valley of death', between the towns of Sangin and Gereshk.
Caroline Wyatt has been out with the troops.