The 150-acre estate will become the Royal British Legion National Remembrance Gardens in September, following a full integration with their parent charity, the Royal British Legion (RBL).
Bosses say the revamp of the site in Alrewas, Staffordshire, reflects its evolution since it first opened 25 years ago.
They added it would highlight the central role they played in the RBL's vision to "bring society together to recognise, remember, and support the armed forces community".
Mark Atkinson, the RBL's director general, said: “The National Memorial Arboretum is a remarkable place that has long held a special place within the Royal British Legion.
“Founded on an inspirational vision, its dedicated team has worked tirelessly over the past 25 years to solidify the site as the nation's year-round place to remember."
Visited by more than 300,000 people each year, including over 26,000 young people on learning visits, the RBL National Remembrance Gardens will continue to provide a dedicated place to commemorate service and sacrifice by members of the Armed Forces, emergency services and civilian organisations.
Directors say its collection of more than 420 memorials will continue to grow and a vision for investment to enhance the site’s position as the nation’s year-round place to remember will be announced later this year.
Philippa Rawlinson, director of the arboretum and of remembrance at the RBL, said: “The National Memorial Arboretum is such a special place because of the commitment of our team members and the wider communities who care deeply about preserving the inspirational stories behind our more than 420 memorials.
“The full integration of the arboretum and the RBL gives us the strongest possible foundation for the future, helping us pass the baton of remembrance to future generations.”
