The King has vowed that the sacrifices of VJ Day heroes "shall never be forgotten" in a moving address to the nation to mark the 80th anniversary on Friday.
Speaking in a pre-recorded message from the Morning Room at Clarence House, the 76-year-old monarch references the historic audio broadcast made by his grandfather King George VI.
The King describes how the heroes of VJ Day "gave us more than freedom; they left us the example of how it can and must be protected", with victory made possible by close collaboration between nations "across vast distances, faiths and cultural divides".
Charles adds that this demonstrates how, "in times of war and in times of peace, the greatest weapons of all are not the arms you bear, but the arms you link".
The service and sacrifice of veterans and those who lost their lives fighting in the conflict "shall never be forgotten", he says.
A new picture released by Buckingham Palace also shows the King sitting solemnly at his desk with his hands clasped together inside his London home.
There will later be a service of remembrance attended by the King and Queen, Second World War veterans and Prime Minister Sir Keir Starmer at the National Memorial Arboretum in Staffordshire.
The royal family's VJ commemorations
VJ Day on 15 August marks the anniversary of Japan's surrender to the Allies following the atomic bombings of Hiroshima and Nagasaki in 1945, effectively ending the Second World War.
After leaving floral tributes at the remembrance service at the National Memorial Arboretum, Charles will view the memorials and meet members of VJ associations.
The King and Queen will then join a reception for VJ veterans and their families hosted by the Royal British Legion.
Elsewhere, the Duke and Duchess of Edinburgh will attend a service at the Scottish National War Memorial, Edinburgh Castle, organised by the Royal British Legion Scotland.
It comes after Sophie met with 105-year-old war veteran, James 'Jim' Wren, at his care home in Salisbury on Tuesday.
The Duke and Duchess of Gloucester will also attend the Far East Prisoners of War VJ Day 80th anniversary service at Norwich Cathedral, before joining a second commemorative service dedicated to the Children and Families of the Far East Prisoners of War in Suffolk.
