The UK has handed control of Camp Bastion in Helmand province to Afghan security forces, marking the end of a military presence in the country that spanned more than a decade and cost 453 British soldiers their lives.
A former army medic, who was awarded the George Medal for risking his life to save others in Afghanistan, says he has to believe the war was "worth it".
More than 140,000 British servicemen and women have taken part in the Afghan War and 453 of them will never come home.
ITV News' Diplomatic Correspondent John Ray spoke to Paul Hartley about his experiences of war.
The mother of Trooper James Munday, who was killed in Afghanistan in 2008, says the mission's end brings no closure for her or her family.
One girl's reaction to a suicide attack in Kabul has become emblematic of the worst days of the war. ITV News has tracked her down.
Once home to 10,000 troops, all of the UK's armed forces have now left Camp Bastion in Afghanistan.