Some Unholy War — Terence Strong

Dave Aston is a dead man walking.
He had been a soldier, a member of the British SAS. He'd ridden an adrenalin wave, invincible. Black Ops in Iraq and Afghanistan.
Until that final mission into bandit country. Unauthorised, so no back up. That was when his luck ran out . . .

Everything is lost: his marriage, his home and his self-respect. Down and out, with a broken body and a damaged soul, on the cold streets of his homeland. There he discovers that the astonishing circle of deceit is complete.
With new friends amongst the down-and-outs, he discovers a trail of drug-dealing, murder and intrigue that winds all the way back to the Taliban badlands of Afghanistan.

But is he just too far down to fight back against a new evil force at work in his own back yard? Can he possibly find the strength and courage to avenge his friends and save himself?
Tense and exhilarating with characters that get into your head and under your skin, Some Unholy War is a riveting story from a master of the modern thriller.