Around a hundred thousand people are expected to visit Llandudno for the Armed Forces Day today.
Displays including the Red Arrows are set to thrill the crowds on the town's promenade and at the arena in Bodafon Fields.
The Princess Royal, Princess Anne, will attend the event, and there will be flypasts from the Battle of Britain Memorial Flight team which includes a Lancaster bomber, Spitfire and a Hurricane.
Prime Minister Theresa May will also attend the event and gave the people of North Wales a special message ahead of Armed Forces Day.
A huge warship - the HMS Somerset - is docked in Llandudno for the event. You can take a tour of the ship here.
We'll be bringing you all the latest from the event, which is leading the nation in saying thank you to our servicemen and women.
You can follow this live blog for updates throughout the day, including pictures and video of the spectacular action.
The programme for the day is due to start at 11am and finish at 5pm.
For more information, check out our https://www.dailypost.co.uk/whats-on/armed-forces-day-2018-llandudno-14842319ultimate guide to the event here.
Image copyright AFP
Events are being held around the world to mark the UK's Armed Forces Day.
Around 100,000 people were expected at the main national event in Llandudno, Wales, with street parties and military parades taking place elsewhere.
Prime Minister Theresa May met military personnel, volunteers and members of the public Llandudno.
Mrs May praised the "professionalism and bravery" of the armed forces and announced Salisbury as the venue for next year's event.
More than 200 events are open to the public in the UK. Overseas, celebrations include a parade in Orhuela, Spain and an open day at a British military base in Larnaca, Cyprus.
British military bases elsewhere around the world are also taking part.
The prime minister was greeted with light applause at Venue Cymru, Princess Anne was cheered on her arrival.
Image copyright AFP Image caption Those in Llandudno were treated to a display from the Red Arrows
Image copyright AFP
Image copyright AFP Image caption The armed forces saluted Mrs May and Princess Anne during the parade
Brass bands from all sectors of the armed forces played as they took it in turns to salute the princess in the parade along Llandudno promenade.
Red, white and blue confetti fell during the first event of the celebrations.
After a Red Arrows air display, Mrs May met members of the public and military personnel.
The prime minister announced that next year's event will be held in Salisbury - after the nerve agent attack there.
Image copyright AFP Image caption The main celebration is being held in Llandudno, Wales
Image copyright EPA Image caption Princess Anne and the prime minister spent time talking to members of the armed forces
Image copyright PA
Mrs May told volunteers there was "nowhere more suitable" than the Wiltshire city to hold next year's celebrations, describing the military response to the incident as "remarkable".
Speaking at the event, Defence Secretary Williamson said the 10th Armed Forces Day was "a valuable opportunity to honour our troops who work so hard to keep us safe".
In a video posted on social media, Labour leader Jeremy Corbyn said Labour "strongly supports the Armed Forces Covenant by which this country promises that those who have served, and their families, are treated fairly".
Mrs May also announced the UK will hold its first ever national games for wounded, injured and sick veterans and personnel next year.
She added the decision was "inspired by the Invictus Games".
Armed Forces Day is here and it’s promising to be a weekend to remember in Cleethorpes.
Tens of thousands of visitors are expected to flock to the resort today for a packed line-up of parades, displays, stalls, music and more.
Last night saw the celebrations kick off with entertainment on the seafront, climaxing with a firework display.
Today will see the event get into full swing with the main parade followed by music at the Remembrance Gate in the early evening.
During the afternoon, there will also be air displays from the Dakota and the Blades.
Before that, we’ll see a world record attempt as volunteers attempt to build around 2,500 sandcastles in an hour.
The day will round off with another firework display ahead of Sunday’s schedule which will focus on the RAF Centenary celebrations including the legendary Red Arrows.
Follow our live blog below where we’ll bring you updates from the day including the traffic and travel situation with a number of roads closed for the event.
Salisbury will host next year’s national Armed Forces Day, Theresa May has announced, as a tribute to how the city dealt with the aftermath of the nerve agent attack in March.
The prime minister is attending this year’s event on Saturday in Llandudno, north Wales, where she is expected to hail the military’s work in dealing with the poisoning of the Russian former double agent Sergei Skripal and his daughter Yulia.
'Close to normal now': Salisbury gets back on its feet as royals visit Read more
“The military response to the nerve agent attack [in Salisbury] has been remarkable,” she will say. “By holding Armed Forces Day there next year, we are also celebrating the tremendous resilience and great spirit of Salisbury and showing clearly it is open for business. It’s a great city, enriched by military history and a wonderful place to visit.”
Thousands of people lined Llandudno promenade to greet May and Princess Anne as they entered Venue Cymru.
May applauded and Anne saluted military personnel and their brass bands as they marched past to mark the start of the event.
Facebook Twitter Pinterest Theresa May (C), her husband Philip (4L) and defence secretary Gavin Williamson (3L) applaud as veterans and serving personnel march past. Photograph: Oli Scarff/AFP/Getty Images
Jeremy Corbyn is expected to praise veterans and service personnel, and say the UK should do more to recognise their sacrifices through better pay and public services.
“Every day we must remember what you do for our safety and security,” the Labour leader will say in a video message. “This work means you spend so much time away from your families and friends. And for all your sacrifices and all that you have done for us, we must do so much more for you.
“Labour strongly supports the armed forces covenant by which this country promises that those who have served, and their families, are treated fairly. Whether it’s healthcare, housing or pay, we must do more to ensure that our duty to you matches your service to us.”
There are more than 5,000 members of the British armed forces deployed in 30 countries.
Salisbury will also host the 2019 Invictus Games, a sporting tournament founded by Prince Harry for wounded, injured and ill service personnel and veterans from more than a dozen countries.
Since its inaugural event in London in 2014, the annual competition has demonstrated how sport can play an important role in mental and physical recovery.
