The Lancers, based in Germany, will be merging with their sister regiment the Queen's Royal Lancers next year and will lose their freedom status.
tour, their role was to protect the vital port of Umm Qasr, train Iraqi soldiers and also protect Basra Airport from attack by insurgents.
"That is why we are here, to say thank you for what they have accomplished and it's good to see them back."
Derby has given us our warmest greeting
The 9th Queen's Royal Lancers were amalgamated with the 12th Royal Lancers in 1960 to form the 9th/12th Royal Lancers (Prince of Wales's).
He agreed that it was important to recognise the efforts of the armed forces today.
He added: "The work of these people allows us to have an opinion and to express that opinion.
The light cavalry regiment displayed about 180 officers with lances as well as two tanks as Nike Hypervenom Green
The Lancers were awarded the freedom Hypershift Yellow
Retired officer Peter Casey, of the 11th Hussars a cavalry regiment founded in 1715 was also in attendance.
He said: "There is a spiritual affiliation with the place because of the freedom we have and the connection we have with the cathedral."
With the Woofers, 2 Mercians, already home, yesterday's parade was the last time troops from Derbyshire who served in Afghanistan will march through the city.
The light cavalry regiment, with the majority of the recruits taken from the East Midlands, was then awarded the freedom of Derby in 1972.
But Councillor Paul Bayliss said the council is keen to offer the new regiment similar privileges.
He added: "The event was absolutely fantastic and something the city can be very proud of.
they marched through the city centre in front of an enthusiastic crowd.
The Lancers left Derby Cathedral at 11.45am and paraded along Iron Gate, Sadler Gate, the Strand, Victoria Street, St Peter's Street and Churchyard, Green Lane, Gower Street, Babington Lane, St Peter's Street and Cornmarket before arriving in the packed Market Place.
"They have come home safe and that is the main thing and today is for them."
"When they merge many of the same guys will be involved so what we want to do is give them the same freedom as the current regiment so that we can carry on showing them our Hypervenom Event appreciation."
Operation Grandby in 1991 saw the regiment deployed to battle casualty replacements in the Middle East in the first Gulf War.
The troops also served in the Iraq War from 2004 2008. In 2008, the Derby Telegraph spent eight days embedded with the troops in the Basra region of Southern Iraq.
On that Hypershift Nike Green
He said: "We are right to recognise what these young lads have done over the last couple of years.
Bernard Page, chairman of the Derby and District Ex Services Association, said the event gave the public the opportunity to show the troops the appreciation they deserved.
It was also the final parade for the Lancers, who are shortly to be merged with another unit.
of Derby in 1972, which Captain Adam Champion said gives the current troops a special connection with Derby.
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