They will be joined by a third member of their regiment who was mentioned in dispatches.
On 18 March, 2005, The Ministry of Defence announced the armed forces operational honours awards. These included the award of the Military Crosses to three members of the Royal Welch Fusiliers for gallantry under fire in Iraq.
"We felt it would be nice to honour the gallantry of these three Welsh soldiers by inviting them to the Grand Slam occasion. They will be guests of the WRU and will be presented to the crowd before the game," said Paul Sergeant, Millennium Stadium general manager.
The three recipients of the Military Cross are:
Fusilier David Evans (25) of Swansea
Company Sergeant Major (WO2) Mark Evans (39) of Dyserth
Sergeant Neil Griffiths (30) of Ynysybwl.
Unfortunately, Company Sergeant Major Mark Evans is unable to come to the game today. However, Sergeant Martin Gregory (27) of the Rhondda will replace him. He was mentioned in dispatches in the same action in Iraq.
The Royal Welch Fusiliers were on operations in Iraq between April and November of 2004, during an significant upsurge in violence and terrorism.These operations were carried out under oppressive weather conditions with high humidity and temperatures rising to 50 degrees centigrade.
During this period the Royal Welch were in regular contact with their enemy both in the Mayan district South of Basra and in Al Amarah, where A Company 1RWF were attached to the Princess of Wales's Own Regiment Battle Group.
In each case these men displayed cool courage and brave leadership whilst under heavy fire from the enemy, defeating them even when the odds were numerically stacked against them. Their actions undoubtedly saved the lives of their colleagues.
Twelve young people have been selected to follow a one year WRU Coach Core apprenticeship programme. Coach Core was set up by the Royal Foundation of the Duke and Duchess of Cambridge and Prince Harry as part of the Olympics legacy in 2012 and the Duke of Cambridge was on hand to meet the apprentices on their first day in the job. The programme has been funded by the Hunter Foundation.
The WRU has launched a campaign to create a long term legacy for Welsh club rugby by highlighting the advantages of volunteering. Rhian Edwards, a volunteer at Seven Sisters, has enjoyed many benefits of her volunteering at a grassroots rugby club including being part of the Rugby World Cup volunteer workforce after being nominated by the WRU - and the WRU is asking for more people to develop their 'Welsh rugby roots'.
Wales head coach Warren Gatland and captain Sam Warburton say their first prioirty on Sunday in the opening game of the World Cup is to win against Uruguay and not get overly concerned with points difference.
With only days to go until the biggest rugby competition in the world begins, rugby fans visiting Cardiff this autumn will be able to enjoy a special display at National Museum Cardiff as part of the celebrations surrounding the Rugby World Cup.