This week has seen the centenary of the commencement of World War One. It ended or changed millions of lives, including my grandparent's. He was a volunteer - a married man with three young children - when he joined up in 1915. Although serving as a Pioneer in the Royal Engineers on the western front until the end of the war, he was one of the lucky ones who came home. Seventeen million combatants and civilians died in the war. However, my grandfather's homecoming wasn't the one either he or his wife would have envisaged. Before he returned, she died in March 1919 from the Spanish 'flu pandemic which killed between 50-100 million people worldwide. There are millions of stories sadder or happier than this one. One good thing that will come from commemorating the centenary of World War One will be that more of these stories will come to light. Did members of your family serve during World War One? If so, leave a comment for me - I'd love to hear about them.