Tributes will be paid and services held as Bradford district honours servicemen and women past and present on Armed Forces Day.
In Bradford, the 144 Army Cadet Band will lead a parade of standard bearers into City Park to begin the drumhead service shortly before 11am.
That will be followed by an outdoor concert featuring the Bradford Metro Concert Band and the West Yorkshire Fire and Rescue Service band.
To commemorate the 100th anniversary of the start of World War One, there will also be an afternoon of children's activities, live music, street theatre, exhibitions, a tea dance, food and war vehicles until 8pm.
Also in Bradford, at the New Inn in Thornton Road, Thornton, a family-friendly Poppy Appeal event will feature live bands, barbecue, beer tent, bouncy castle, cake stalls and tombola. A spokesman said: "Come along and enjoy the day supporting all those who have served and all who are in service."
In Baildon, sculptures celebrating the armed services, and reflecting the issues that military personnel past and present face, will be unveiled.
The Yorkshire Armed Forces Sculpture Trail is at Ferniehurst Dell and features numerous sculptures by different artists. It was made possible by Baildon town councillor Ian Lyons, with help from Titus Salt School, the Armed Forces Community Covenant Committee, Baildon Town Council, Baildon Mechanics Institute and Bradford Council.
The trail's grand opening is at the Baildon Road park between 1pm and 5pm.
Keighley's first Armed Forces Day will feature a tribute to the services and a host of activities.
Organiser Andrew Spence said: "The aim is to provide people with a fun family day out but also build support and recognition for our armed forces."
The day will begin with a half-hour service at Town Hall Square, from 10.15am.
It will be followed at 11am with a ceremony at Cliffe Castle, and then several hours of activities in the grounds of the museum. The Yorkshire Regiment recruitment team – led by Sgt Gavin Dillon – will be providing an inflatable assault course and military vehicles.
There will also be military vehicles on display, crafts, drill and radio demonstrations, a barbecue, and face painting.
The Northwest 101st Airborne will be present with several vehicles.
In Skipton, the day's celebrations will begin at 10am and will include displays by civil war re-enactors The Sealed Knot and Haworth Home Guard, music from Skipton Brass Band, the town's Royal British Legion band and the local ATC band as well as stalls along the High Street, which will be closed to traffic.
The event will end with the rededi-cation of the war memorial at the top of the High Street at about 4pm.
In Ilkley, staff at the Lister Arms will be marking the day by wearing 1940s dress, hosting cadets and offering punters the chance to win a luxury hamper, with celebratory pies and cakes also on sale.