The Prince of Wales and Duchess of Cornwall are due to head to Serbia as they make their second stop of a six-day tour of the Balkans.
Charles and Camilla will be greeted in Belgrade by prime minister Aleksandar Vucic, before a packed day of engagements.
After meeting President Tomislav Nikolic, and his wife Dragica Nikolic at the president's palace, they will attend a memorial ceremony at Belgrade New Cemetery.
Charles will lay a wreath at the Memorial Crypt of the Belgrade Defenders, and they will both attend a wreath-laying ceremony at the Commonwealth War Graves Cemetery, and take a walking tour at Kalemegdan Fortress.
The Prince will later participate in inter-faith dialogue with representatives from Serbia's Christian, Muslim and Jewish communities at Princess Ljubica's House.
Camilla will visit Zvecanska Children's Home and meet representatives of Unicef and the Djokovic Foundation.
Other engagements include Charles visiting the Nova Iskra Entrepreneurship Hub and St Sava Temple.