Since before the time of Alexander the Great trained soldiers have sold their expertise on battlefield around the World, fighting and dying in other people's wars for money, glory or the lust for violence and combat. In this book Harry McCallion explores the development of modern mercenary forces from the British SAS led deniable operation in Yemen in late 1960's, during which the Israelis were persuaded to arm the SAS led Yemeni tribesmen, through the bush wars in Africa, Britain's ill fated intervention in the war in Afghanistan right up to today's War in Ukraine. Many of the modern day British mercenaries were known to the author personally. including such notably figures as the legendary SAS Fijian warriors �Tak � Takevesia who, although in his early sixties shot his way out of an ambush in Bagdad and Fred �Big Fred' Mrafano who devoted himself to the cause of the people of Serra Leone. SAS veteran .Bill Scully who received the Queen's Gallantry Medal single-handedly protected 1,300 civilians from rebel troops during the uprising in May 199 7after the Sierra Leone coup and American Vietnam veteran Major �Mac' Mackenzie, who although badly wounded in Vietnam, rose from trooper to command a Rhodesian SAS squadron and was one of the units most highly decorated soldiers. Also included are more notorious figures like Costas Georgiou also known by his alias Colonel Callan who served in the 1st Battalion of the Parachute Regiment but was dishonourably discharged and sentenced to five years in prison for a post office robbery, later he proclaimed himself a �Colonel' and led a group of psychopathic mercenaries in the Angolan War of Independence, before being captured and executed by Angolan forces. The book explores the roles of modern day mercenaries, who's use has expanded precisely because they are mercenaries, fighting for money and not love of country, their deaths are not seen as a patriotic sacrifice, often they go unreported and in turn helps to conceal the true tragic human cost of waging a war. As one former private military contractor recently stated to Australian TV �If you want to conquer in the 21st century�you use mercenaries, special forces, things to keep war secret and nobody's better at secret wars than mercenaries.�

When British troops first deployed to Northern Ireland in 1969 to keep apart rioting factions of loyalists and nationalists, they could not have known that they were being drawn into the longest campaign in the British Army's history, a battle against the threat of a new rising force - the Provisional Irish Republican Army.

While patrols, vehicle bombs and incendiary speeches are the defining memories of the Troubles, the real war was fought out of sight and out of mind. For thirty years, Britain's Special Forces waged a ferocious, secretive struggle against a ruthless and implacable enemy.

Harry McCallion's deep experience across the theatre of Northern Ireland offers a unique insight into nearly every major military action and operation in the Province. Having served seven tours with the Parachute Regiment, undergone selection for 14 Intelligence Company, completed six years with the SAS - including two tours with their anti-terrorism team - and received two commendations for bravery during service with the Royal Ulster Constabulary, there are few more qualified to tell this astonishing story.

This book is his blistering account of the history of Britain's war against the IRA between 1970 and 1998. From new insights into high-profile killings and riveting accounts of enemy contact, to revelations about clandestine missions and the strategies used in combating a merciless enemy, Undercover War is the definitive inside story of the battle against the IRA, one of the most dangerous and effective terrorist organisations in recent history.