'Mate, you're right. They're heading for our bit of wall by the looks of it.' His voice rose higher as he realized quite how close they'd got.

Flash reloaded his weapon with a fresh thirty-round mag without looking down. We all needed to stay focused on the darkness for any sign of movement. 'Keep switched on, Briggsy. They're trying to take one of us alive. They've been trying for weeks now… let's make sure we don't let them.'

There was a muzzle flash about twenty metres in front of us. We all gave it a five-round burst. The Taliban didn't fire back. All the same, all three of us kept on firing into the darkness to make sure they never would.

Flash was another mate in my patrol. He was called Flash only because he wasn't. He was much older than the rest of us, even older than my mum, I think, but he was sound. His hair was totally grey and he had a chin big enough to balance a mug of tea on. All he needed was a dance partner and he'd be Bruce Forsyth's longlost twin brother.

Flash was in the Territorial Army, so of course all the patrol gave him a hard time for being a part-time soldier. Even I, the new boy, was allowed to join in. He came from way up north, near some big car factory. They'd made him redundant and then he'd lost his house. So with a wife and two boys older than me, he was out here aggressive camping with us lot just to pay the bills.

Flash glanced down at the mags in his chest harness and jerked his head round to the right. 'They're getting closer. Toki, we need more ammo. More ammo!'

Toki's voice boomed over to us above the sound of gunfire, 'Stand your ground! John's coming with the ammo. He's coming!'

I looked over my shoulder and could just make out John's massive body as he staggered through the mud, his boots sinking deeper with every step. He was trying to run but was almost doubled over with the weight of the ammo boxes. John was a good laugh. He was from Peckham like me, only from a different estate.