The event will include a wide range of activities including a ceremonial parade in the City Centre on Saturday stepping off from the cathedral at around 0945 involving serving personnel, veterans, cadets and marching bands.
The main event will be hosted on Hudson's field near Old Sarum and will see a number of exhibitions and displays including a dedicated military village.
Wiltshire Police are also advising that there will be an increased police presence in and around the Salisbury area.
Superintendent Adrian Burt, Silver Commander for the event said: "It's an honour for Salisbury to host National Armed Forces Day celebrations to recognise the work of our Armed Forces personnel both at home and overseas. We're working closely with Wiltshire Council, the military and our blue light partners to deliver a safe, secure and enjoyable event for all.
"During this week and over the weekend you will see an increased police presence in the area to ensure a safe event for all. A significant number of visitors are expected to attend the event and you may find yourselves in large crowds of people.
"We would like to encourage the public to keep your belongings secure and on your person at all times."
There will be a number of road closures in place around the city and event organisers are encouraging people to consider using public transport or to walk to the event to reduce pressure on the roads in and around the city.
Supt Burt added: "We want people to have a safe and enjoyable time and make sure the weekend is memorable for all the right reasons.
"The public can help us by planning their journey's in advance, allowing themselves plenty of time to get to Salisbury and familiarising themselves with travel arrangements for the event including parking.
"The policing operation will be amongst the largest in Wiltshire Police's history, although our communities can be reassured that our response to incidents and day to day policing will not be affected by the policing of the National Armed Forces Day."
Further information is available via the Wiltshire Council website: http://www.wiltshire.gov.uk/salisbury-afd
For travel updates over the weekend listen to BBC Wiltshire or Spire FM and follow #SalisburyAFD on social media for latest information and guidance.
Published Monday 24 June 2019