A Royal Marine convicted of murdering an injured Afghan insurgent can be named as Sergeant Alexander Blackman following a High Court ruling.
Former SAS sniper Sergeant Danny Nightingale has said he will seek legal advice after being convicted for a second time of gun offences.
More than 60,000 people are expected to turn out to salute the Armed Forces today as Nottingham steps into the national spotlight.
Former SAS sniper Sergeant Danny Nightingale, 38, has been convicted by a court martial board of possessing a Glock 9mm pistol and 338 rounds of ammunition, which were found in his bedroom in September 2011.
Nightingale had originally pleaded guilty to the two charges in November last year and was sentenced to 18 months' military detention.
The father-of-two, from Crewe, Cheshire, appealed against that sentence. which was subsequently reduced.
The Court of Appeal later quashed Sgt Nightingale's original convictions and a fresh trial was ordered.
Families of fallen soldiers gathered at the National Memorial Arboretum in Staffordshire today to honour members of the armed forces who were killed last year.
52 names were engraved on the memorial wall in April and May.
During the emotional service all the names were read out by senior members of the armed forces.
ITV News correspondent Rupert Evelyn reports:
The Red Arrows performed a fly past during Armed Forces Day celebrations in Nottingham today.
Crowds of people are gathering in Scarborough to help celebrate Armed Forces day. Events are taking place across the country which began today with an artillery regiment firing a volley of gun blasts at Nottingham Castle.
Around 1,000 servicemen and women will march through Cardiff later to mark Armed Forces Day. The day celebrates the work of all military personnel past and present.
The March through the Welsh capital will coincide with the 70th anniversary of the start of the Battle of the Atlantic. It was the longest continuous military campaign of the second world war.
After the march, Coopers Field in Bute Park, Cardiff, will play host to various events such as musical performances by the Commando Training Centre Band of the Royal Marines supported by the South Wales Police Band.
There will also be displays by the Royal Signals motorcycle display team, the "RAF Falcons" Parachute Display Team and a fly-past by an RAF Sea King helicopter.
The Prime Minister has said the UK have not been "good at expressing pride" for Armed Forces ahead of celebrations today.
David Cameron said: "That's what this day is all about, pride and gratitude, celebrating what our armed forces do and above all saying thank you. If we're honest, for a long time in this country we were not very good at that".