A captain in 29 Commando, Johnny Mercer served in the army for 12 years. On his third tour of Afghanistan, he was a joint fires controller, with the pressurized job of bringing down artillery and air strikes in close proximity to his own troops. Based in an area of Northern Helmand that was riddled with Taliban leaders, he walked into danger with every patrol, determined to protect them. Then, one morning, in brutal close-quarter combat, everything changed....

What makes an ordinary but highly educated Englishman, with no previous military training, decide to travel and fight in one of the most brutal conflicts on the planet? Desert Sniper is an extraordinary true account of one man's journey from well-meaning volunteer to battle-scarred combat sniper, placing himself daily in the line of fire to fight one of the greatest evils of this new century.

3 PARA was the first unit into Helmand in 2006. Sent on a peace mission, it became engaged in a level of combat that had not been experienced by the British Army since the end of the Korean War. Undermanned and suffering from equipment shortages, 3 PARA fought doggedly to win the break in battle. Numerous gallantry decorations were awarded, but they were not without cost. This is a dramatic, and often moving, insight into the leadership of soldiers at the sharp end of war.

Rob Driscoll, former sergeant with 42 Commando, Royal Marines, served tours in Iraq, Kuwait and Kosovo. A born leader of fighting men, with the medals to prove it, he also endured three tours in Afghanistan. The third of those will go down in history as one of the UK military's darkest hours, for it marked the first time a British serviceman has been tried for a murder on the battlefield since the Second World War.

It takes a tough mind-set to be a successful sniper, to be able to dig in for days on your own as you wait for your target, to stay calm on a battlefield when you yourself have become the target the enemy most wants to take out. Craig Harrison has what it takes, and in November 2009 in Afghanistan, under intense pressure, he saved the lives of his comrades with the longest confirmed sniper kill - 2,475 metres, the length of 25 football pitches.

In Helmand province in July 2006, Major Adam Jowett was given command of Easy Company, a hastily assembled and understrength unit of Paras and Royal Irish rangers. Their mission was to hold the District Centre of Musa Qala at any cost. Easy Company found themselves in a ramshackle compound, cut off and heavily outnumbered by the Taliban in the town.

In April 2006, the elite 3 Para battlegroup was dispatched to Helmand Province in southern Afghanistan. They were tasked with providing security to reconstruction efforts, a deployment it was hoped would pass off without a shot being fired. In fact, over the six months they were there, the 3 Para battle group saw near continuous combat, one gruelling battle after another, in what would become one of the most extraordinary campaigns ever fought by British troops.

Born ‘a ragged-arsed kid from the backstreets of Glasgow’, McCallion joined the Paras to escape a miserable home life and find the family he longed for. After six tense tours in Ulster, McCallion gave up everything to move to South Africa in the hope of qualifying for the highly elite South African Special Forces. Having succeeded in joining the Recces, McCallion was involved in plots to assassinate Robert Mugabe and Joshua Nkomo.

In the summer of 2006, Colour-Sargeant Kailash Limbu's platoon was sent to relieve and occupy a police compound in the town of Now Zad in Helmand. He was told to prepare for a 48-hour operation. In the end he and his men were under siege for 31 days - one of the longest such sieges in the whole of the Afghan campaign.

From its early beginnings in World War II, the Special Air Service (SAS) has won renown in some of the most dramatic, dangerous and controversial military special operations of the 20th century. It is a secretive and mysterious unit, whose operations and internal structures are hidden from the public eye. Now, one of its longest-serving veterans offers a glimpse into the shadowy world of the SAS. Rusty Firmin spent an incredible 15 years with 'The Regiment' and was a key figure in the assault of the Iranian Embassy in London in May 1980. 

Among You is the gripping real-life story of a soldier serving on the front line in Iraq and Afghanistan, and an unforgettable, unflinching account of the effects of post-traumatic stress disorder. Jake Wood lives parallel lives: encased in the glass tower of an international investment bank by day, he is also a dedicated TA soldier who serves on the front line during the invasion of Iraq, later returning to the war zone to conduct surveillance on insurgents.

Kim Hughes is the most highly decorated bomb disposal operator serving in the British Army. He was awarded the George Cross in 2009 following a gruelling six-month tour of duty in Afghanistan, during which he defused 119 improvised explosive devices, survived numerous Taliban ambushes and endured a close encounter with the Secretary of State for Defence.

The story of one of the Afghanistan war's most decorated units and their 15-month ordeal, culminating in the Battle of Wanat, the deadliest battle of the war. A single company of US paratroopers - calling themselves the "Chosen Few" - arrived in eastern Afghanistan in late 2007 hoping to win the hearts and minds of the remote mountain people and extend the Afghan government's reach into this wilderness. Instead, they spent the next 15 months in a desperate struggle, living under almost continuous attack, forced into a slow withdrawal, and always outnumbered by Taliban fighters.

For the first time, a blistering, highly charged account from the man known as 'Marine A' who was at the centre of the controversial murder of a wounded Taliban fighter. His case led to an unprecedented wave of public support which raised over £800,000 to fund his appeal. The nerve-shredding situations Sgt. Blackman operated within, under sustained attack for long periods, living in the unrelenting horror of a theatre of war, took their toll mentally and physically.

April 2004: Dan Mills and his platoon of snipers flew into Southern Iraq, part of an infantry battalion sent to win hearts and minds. They were soon fighting for their lives. Back home we were told they were peacekeeping. But there was no peace to keep. Because within days of arriving in theatre, Mills and his men were caught up in the longest, most sustained firefight British troops had faced for over 50 years.