 The vast majority of fatalities have taken place since the redeployment of British forces to the Taliban stronghold of Helmand province, as prior to deployment in this area only five men died between April 2002 and early March 2006.In all, 404 of the fatalities are classed as killed "as a result of hostile action" and 51 are known to have died either as a result of illness, non-combat injuries or accidents, or have not yet officially been assigned a cause of death pending the outcome of an investigation.The Army has seen the heaviest losses, with 362 fatalities as of 1 May 2013.