All he knows is that a Taliban bomb has claimed the life of his brave soldier son Shaun, 24.
"I'm just so proud of him," said Carl. "He died a hero."
Carl and his children last week joined a growing group of 212 families who have lost loved ones in the bloody war - which led defence aide Eric Joyce to quit in protest this week.
Writing in today's News of the World, Mr Joyce agrees with grieving Carl that Fusilier Bush and his fallen comrades died as heroes.

He says: "I hope part of his legacy will be that his death caused us all to pause to reflect on what's really going on in Afghanistan - why our people are there; when they'll leave."
But such questions do not trouble Shaun's heartbroken father, Carl. He said: "I stay well away from politics.
"All I know is that we're fighting a war on terrorism, and Our Boys are out there fighting for the good of our country.
"People are welcome to their own opinions. But I just know that my son was proud to serve his country and we all stood by his choice."
HAS GORDON BROWN LET DOWN OUR TROOPS? TELL US BELOW
Shaun, of the 2nd Battalion, the Royal Regiment of Fusiliers, died ten days ago at the Royal College of Defence Medicine, where he was rushed after the bombing a week earlier.
He was running to the aid of Sgt Simon Valentine, who was blown up while on foot patrol in Sangin, when he was struck down by a secondary device.
"I just can't believe he's not coming home," said Carl between long, stunned silences. "It hasn't sunk in - maybe it never will. He died trying to save someone else. It doesn't surprise me at all.
"It's the kind of lad he was. He'd do anything for anyone."
It was the Coventry City fan's childhood dream to join the Army and aged 21 Shaun achieved it. Carl said: "It was what he always wanted. It made sense when he signed up."
His son's death is another crippling hurdle life has thrown at the family, who lost mother Diane last Christmas due to liver failure.
Carl, who lives in Coventry, said: "It's been a tough year. When I got that call first to tell me about Shaun, I just thought how can I tell his brother and sister?"

At the mere mention of Shaun's name his 17-year-old sister Hannah's face beams with pride. "I'm always so proud to say he's my brother," she said. "He's the best brother in the world."
When Shaun was back home all his time and money was spent making his family's life a little more fun.
His brother Lewis, 16, said: "The first thing he did was take me out shopping for computer games and trainers. He took us all out for a meal when he was back in July and it was great. On the morning when he left to go back to Afghanistan he tried giving us money.
"We wouldn't take it but he'd never take no for an answer. He just left a pile of notes out for us."
His sister couldn't even face being in the room as Shaun said what turned out to be his last goodbye. Hannah said: "I had to wait out in the garden because it was too hard.
"I always hated saying goodbye. And now he's never coming back."
For just over a week the family and Shaun's girlfriend Amy Taggart, kept a bedside vigil at the hospital.
Carl said: "The doctors and nurses there were second to none.
"You never think you're going to lose your lad. We thought he'd be fine once he was there."
But hope died on August 26, when doctors told the family news they thought they'd never hear.
Hands trembling and barely able to let the words pass his lips, Carl said: "The doctors brought me into a room. They said Shaun's condition had taken a turn for the worse and they didn't think he'd make it.
"He was dead only hours later. I can't imagine life without him."

Shaun never questioned the military leaders whose decisions and instructions he - and 9,000 other troops - faithfully carried out. Many have griped about the lack of equipment and support our soldiers receive.
But Carl said: "All I know is what Shaun told me and he never complained about any of it.
"In fact he always spoke very highly of the kit they had. He could never make out why everyone back home moaned so much about it."
Girlfriend Amy, 21, remembers Shaun as her "beautiful brave hero".
She said: "Shaun was more than just my boyfriend, he was my best friend. He was my first and only true love.
"I don't know what I will do without my soulmate, the man of my dreams, my perfect match. I'll never stop loving him.
"I am devastated to have lost him but so proud to have known him and to say that he was mine."
RESIGNING from a minor government appointment isn't a particularly noble thing to do - it's usually a lot harder to stick in and be part of a team effort, to tell the truth.

For me, it's simply a personal matter of the way I see things at this critical moment: What the folk I talk to inside and outside the services and especially what people in my constituency of Falkirk think.
It will become clear this week that President Karzai has "won" on the first round of the Afghan elections. Folk in the UK will ask what that means and measure it against the risk our Forces take.
It'll be a defining "is it worth it" moment which might represent the final chance for politicians to convince the public to stick with it.
I've no doubt at all that if the allies weren't in Afghanistan then the place, bordering a febrile Pakistan, would become a vacuum which would pull in bordering countries - a great danger to all of us. That's why our brave forces are there, taking the risks that they do.
The public is behind them, but have legitimate doubts about the mission. The wisdom of crowds is right. There's a sad last rite of passage going on in Wooton Bassett, Alloa and Dundee and many injured casualties have moved back to their loved ones.
Shaun Bush most certainly died a hero, along with many of his much-loved comrades. I hope part of his legacy will be that his death caused us all to pause to reflect on what's really going on in Afghanistan; why our people are there; when they'll leave.
People want the job done properly but right now they can't see an end in sight and the corruption of the Afghanistan regime doesn't help.
We need to make it clear that there's a big last push coming which will last for a couple of years yet, but then we'll be out. We need total clarity on that.
And, for the moment, we make it clear that we won't push the electoral abuse and idiotic legislation of President Karzai under the carpet.
Afghanistan isn't going to be a regular democracy any time soon, but by the UK election after next it should be enough to ensure that the place isn't a risk to us, while enabling us to put in people for the much longer term who will help that benighted place develop over time.
The Prime Minister, a truly fine man, made an important speech on Friday. He addressed many important matters of detail. He has Afghanistan at the forefront of his mind. I don't know what he and his advisers are thinking now, but I hope it is these three things: First, we must be direct with the British people that while terrorism can come from many places, the present fight is necessary to prevent the region disintegrating.
Second, we must make it crystal clear that our military task in Afghanistan will be over during the next period of government.
Third, our total commitment to our troops will be clear by the way we look after them and their loved ones, where issues like injury compensation, and many others, loom large.
As for the next UK general election? It should be literally the furthest thing from our minds.
The security of the British people is the first task of any government. And the well-being of our troops comes next.
If the Prime Minister and Labour get that right now, the public will judge us fairly.
This article has 4 comments
what a barve man... a true hero!!! xx
By Lucyann. Posted September 11 2009 at 11:32 AM.
I have known Shaun, (who i call bushy) for many years, he was without doubt my best friend. He spent many days and nights round my place sometimes for a few weeks. I can second what his father Carl said, he loved the army and it doesnt suprise me that he died trying to save someone else. He would put anyone before himself. I remember there was one time when he came away on holiday to Norfolk Broads with me and my family, we rented a house out on one of the broads, i was out shopping with my girlfreind, Hayley, while bushy was fishing at the end of the garden with my brother Neil, meanwhile my dad was out in a sailing dingy, I had a phone call from my mum saying my dads boat has tipped over and he has gone into the lake, without giving it a second thought Bushy dived into the lake to help my dad, it was his instinct to save him. I have had the best laughs and times that i will remember forever, every time i saw him we had a top time even if it was playing the xbox or going away somewhere we always enjoyed each others company. I have so many great memories of the guy, I am so proud of him but will miss him forever and will never forget him.
Miss you always
Marc and Hayley.x
By Marc lovegrove and Hayley Clifton. Posted September 6 2009 at 6:42 PM.
i have to say i am sick of the media giving the government grief over lack of equipment in afghanistan.
having served there in 2007 myself or my colleagues had no complaints about the quality or lack of equipment, in fact i heard nothing but praise for it, we were patrolling in the IED proof mastiff which after having been blown up was never penetrated and could still drive. helicopter support was always available whether for casevac or resupply, and fast air support to defeat the enemy was never more than 20 mins away, so please get off mr Browns back he is doing all he can and as quickly as he can!!!!!
By russ. Posted September 6 2009 at 10:06 AM.
I first want to send my sympathys to all the familys of the hero's that have fallen in action over the years. Major Eric Joyce MP has my up most respect for resigning from his job over the way PM Brown and his cronies seem to go about with their a****s up in the air and head in the ground. When is the Government going to back the troops and give them the support they deserve, they are one of the best fighting forces, if not the best, in the world. They prove this time and time again with the acts of heroism and they way they get on with the job they have been given dispite the lack of equipment and resourses. My dad was in the Army and served in Northern Island and when i read about the acts of heroism our troops do day in day out my chest swells with pride, but at the same time my heart breaks avery time i hear we have lost another member of the armed forces. The Government continue to say they support our boys and girls over there, well start proving it by giving them the support and equipment they need, or bring them home and let them defend the shores of this country.
By Rick Davis. Posted September 6 2009 at 6:55 AM.