The army returns to Iraq where 179 British soldiers were killed between 2003 and 2011. Now they're helping the Iraqis defeat the so-called Islamic State. As the battle for Mosul begins the regiments operate behind the frontlines.
The army is sent to Estonia, on the frontlines of a new cold war. As Russia flexes it's muscles in Ukraine and there is a buildup of troops across Eastern Europe, the risk of miscalculation is very real. Can the British army deter Russian expansion?
A look inside the British army. The British Army is deployed on a UN peacekeeping operation to protect thousands escaping South Sudan's civil war.
