Quick-thinking Serjeant Deacon Cutterham had just five seconds to plunge his arm into murky ditchwater, retrieve the high-explosive device and throw it to safety.
He and his patrol were wading through an irrigation ditch knee-deep in water in the Nahr-e-Saraj district of Helmand in Afghanistan on May 24 last year when the grenade landed in front of him.
Sjt Cutterham, from Bristol, said: "I heard the 'ching' of the fly-off lever coming off it. It all happened so fast but so slowly.
"I just went into autopilot. I shouted 'Get down, grenade', ran forward, grabbed it first time and just let go of it.
"I can't believe I didn't lose my fingers because as soon as I let go of it, it exploded. If I had missed it, it would have been game over." Read more on those receiving bravery medals.
More top news
An 8 year old girl who was given just a 10% chance of living a normal life has beaten the odds after taking part in pioneering treatment.
This week will see largely settled conditions prevailing although it looks as though we may see the arrival of some rain during Friday.
It will be a cold start to the day with patchy fog and frost. However, there will be plenty of crisp winter sunshine and in lights winds.