Letters Unopened for a Century

During the 1st World War, some of the captured Ottoman soldiers who fought on different fronts on 3 continents were able to return home in 1922. The letters these soldiers wrote to their families during their captivity of up to 7 years were their only means of communication.
We are delivering to their grandchildren the letters written to their families by 3 soldiers who were captured in Siberia and set off to return to Istanbul on the Japanese ship Heimei-Maru, which have been waiting in archives for a hundred years. How will these 3 grandchildren, who only know their grandfathers through stories, feel when they receive these letters? What are these letters about? These letters, which have been waiting to be read for a century, are the letters of captured soldiers whose stories have never been told.