Sir Derek Jacobi (Narrator), Tami Davis Biddle (Self - Professor of History, U.S. Army War College), Richard B. Frank (Self - Author, Downfall: The End of the Imperial Japanese Empire), David Glantz (Self - Military Historian (as Colonel David M. Glantz (Ret.))), Phillips O'Brien (Self - Professor of Strategic Studies, University of St. Andrews), Alessio Patalano (Self - Author, Post-War Japan as a Sea Power), Sayuri Gutherie Shimizu (Self - Professor of History, Rice University), Kathleen Sullivan (Self - Hibakusha Stories, International Campaign to Abolish Nuclear Weapons (as Dr Kathleen Sullian)), Setsuko Thurlow (Self - Hiroshima Survivor), Geoffrey Wawro (Self - Professor of Military History, University of North Texas)