Prince William will be remembering some of his fallen comrades on the most important day of his life.
The future King has invited some of their nearest and dearest to his and Kate Middleton's wedding.
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Second Lieutenant Joanna Dyer - a close pal of the Prince's from his Sandhurst days - was killed by a bomb in Iraq in 2007.
Her sister Holly will be at the Westminster service on Friday.
Meanwhile Major Alexis Roberts, who lost his life in Afghanistan the same year, will be represented by his widow Susie Roberts.
Her late husband was the Prince's Platoon Commander at Sandhurst and is remembered by his friend with "great fondness and respect".
In addition, the second in line to the throne has also invited Lance-Corporal Martyn Compton (top left).
He was injured in an ambush in Afghanistan in 2006 which put him in a coma for three months and left him with 75 per cent burns to his body.
The inclusion his comrades in arms gives some indication of the kind of king William hopes to be. Down-to-earth and always mindful of reaching out to ordinary people, he could never be accused of being elitist.
Fitting then, that the groom has included the heads of the charities with which he is associated.
Among them are Seyi Obakin – the Chief Executive of homelessness charity Centrepoint. Seyi slept rough with William on the streets of London to raise awareness (top right).
Then there's Julia Samuel, Chair of the child Bereavement Charity and a close friend of the groom's late mother.
All these guests will be seated close to British and foreign royals such as former King Constantine of Greece, William's godfather.
He wrote to the Prince on hearing of his engagement, advising him to concentrate on his RAF flying rather than thinking about his future bride, because "it's dangerous flying a helicopter when you're in love".
Prince Seeiso Bereng Seeiso of Lesotho will also be there with his wife. The African royal founded the charity Sentebale with Prince Harry five years ago to help orphans in the region.
King Mswati of Swaziland has been invited, but his 13 wives have been left off the list.
And attending his biggest royal event to date, accompanying his wife Crown Princess Victoria of Sweden will be Prince Daniel, Duke of Vastergotland (above).
There will also be several notable names from the celebrity world in attendance, including Princess Diana's close friend Sir Elton John and his partner David Furnish.
Madonna's ex-husband Guy Ritchie will be there, as will David and Victoria Beckham – who are listed on the official guest list as Mr and Mrs David Beckham.
Singer Joss Stone (below), who performed at the Princes' 2007 remembrance concert for Diana, has also been included.
However, there are some names which have had to be left off the list. St James' Palace officials say that Kate and William have had to been somewhat "ruthless" to preserve the "intimacy" they want.
So only those with a long-term husband or civil partner known to the couple can bring their other halves as a plus one.
While Zara Phillips' fiancé Mike Tindall is in – he's listed as "with" Zara rather than "and" as in the case of married couples – Princesses Beatrice and Eugenie will not bring their boyfriends.
There was no space for former PMs Tony Blair and Gordon Brown either, though their predecessors John Major and Baroness Thatcher were included.
Mrs Thatcher has had to decline the offer due to ill health, though Mr Major – who was appointed William and Harry's legal guardian after Diana's death, will be attending.
One explanation from St James' Palace for the omission is that neither Tony Blair nor Gordon Brown are Knights of the Garter, whereas Baroness Thatcher and Sir John are.
A spokesperson added: "It's not a state occasion, so there is no reason why they would be invited."
"It is a private wedding and the couple are entitled to invite whoever they want."
Also among those not to be asked are some of Princess Diana's closest friends, including Rosa Monckton and Lady Annabel Goldsmith.
St James' Palace stressed has stressed that the "vast majority" of the 1,900 guests who have been invited to the ceremony are personal friends of the bride and groom.
Members of the British royal family
- The Queen
- The Duke of Edinburgh
- Prince Charles
- The Duchess of Cornwall
- Princess Anne
- Vice Admiral Timothy Lawrence
- Prince Andrew
- Prince Edward
- Sophie, Countess of Wessex
- Prince Harry
- Princess Beatrice
- Princess Eugenie
- Lord Frederik Windsor, William's cousin
- Sophie Winkleman, Frederik's wife
- Prince and Princess Michael of Kent
- Lady Ella Windsor, their daughter
- Zara Phillips
- Mike Tindall, her fiancé
- Peter Phillips
- Autumn Phillips
Members of foreign royal families
- Crown Prince Felipe and Crown Princess Letizia of Spain
- Prince Philippe and Princess Mathilde of Belgium
- The Sultan of Brunei and Raja Isteri Pengiran Anak Hajah Saleha
- Queen Margrethe of Denmark
- Constantine of Greece
- Prince Seeiso Bereng Seeiso and Princess Mabereng Seeiso of Lesotho
- Prince Albert of Monaco and Charlene Wittstock
- Princess Lalla Salma of Morocco
- Crown Prince Willem-Alexander and Crown Princess Maxima of the Netherlands
- King Harald and Queen Sonja of Norway
- Queen Sofia of Spain
- Crown Princess Victoria and Prince Daniel of Sweden
- King Mswati of Swaziland
- King George Tupou of Tonga
Charity workers and comrades in arms
- Seyi Obakin, head of homelessness charity Centrepoint
- Julia Samuel, chair of the Child Bereavement Charity
- David Allen, chairman of Mountain Rescue, of which William is patron
- Lance Corporal Martyn Compton, injured in an ambush in Afghanistan which left him with 75 per cent burns
- Holly Dyer, sister of William's friend 2nd Lieutenant Joanna Dyer, who was killed in Iraq
- Susie Roberts, widow of Major Alex Roberts, William's Platoon Commander at Sandhurst who was killed in Afghanistan
- Wing Commander Steve Bentley , William's Search and Rescue Force squadron leader at RAF Valley
- Sir Elton John and David Furnish
- Guy Ritchie
- Victoria and David Beckham
- John Major, appointed legal guardian of William and Harry after Diana's death
- Joss Stone, who sang at the 2007 Concert for Diana
- Rowan Atkinson , close friend of Prince Charles
- Tara Palmer-Tomkinson, daughter of Prince Charles' best friends Patti and Charles
- Ben Fogle, adventurer and TV presenter friend of Kate and Wills
- Tom Bradbury, ITN political correspondent