Corporal Sarah Bryant was one of four troops who died when their Snatch Land Rover hit a bomb during an operation near Lashkar Gah in June 2008.

A verdict of unlawful killing was also entered for Corporal Sean Reeve, Lance Corporal Richard Larkin and Private Paul Stout.

At the inquest into their deaths, Wiltshire and Swindon Coroner David Masters said there was an "inadequacy" in training given to the soldiers.

He added: "I intend to submit a report to the Ministry of Defence which will take up a number of these issues which this inquest has quite properly canvassed."

Snatch Land Rovers have been criticised in the past, with some troops referring to them as "mobile coffins".

As part of his narrative verdict, Mr Masters recommended a review on the use of the vehicles.

"The evidence has clearly shown that Snatch Land Rovers were not the preferred vehicle of choice for the evolving task.

"There was significant disquiet about these vehicles being the only resource available to this unit for a variety of reasons.

"It seems that Snatch Land Rovers may not be currently used, but the evidence which we have heard at this inquest indicates to me that this needs to be confirmed by the Minister."

During the six-day inquest, the coroner heard critical evidence about the Snatch Land Rover and the Ebex metal detector.

The sole survivor of the blast that killed the four soldiers said the vehicle they had been travelling in was "not adequate for the job".

Fighting back tears, Soldier E - who can not be named for security reasons - told the coroner: "Having used the Snatch in our pre-deployment training, our concerns were heightened, especially when off-road.

"The mobility and flexibility of the vehicle came into question."

The coroner also heard that soldiers had not been shown how to use the Ebex metal detector in the UK due to an equipment shortage.

In Afghanistan, troops were merely briefed on the instrument and if they wanted more information, had to seek out an expert on base.

One witness, identified as Corporal J, said he was given a 10 to 15 minute demonstration on using the piece of equipment but had to learn how to use it himself.

He told the inquest: "We worked it out ourselves with the use of the manual."

Mr Masters said his Rule 43 report would raise concerns over Operation Barma drill training, the lack of metal detectors and the continued use of Snatch Land Rovers, particularly in Helmand, Afghanistan.

He added he hoped the report would help prevent future deaths.

"In my judgment there was an inadequacy in training for this unit and its members," he said.