Soldaten, on Fighting, Killing and Dying: The Secret Second World War Tapes of German POWs by Sonke Neitzel and Harald Welzer
In the Second World War the British and the US secretly recorded German POWs. This book is analysis of these recordings. The people being recorded had no knowledge this was happening and so it gives some interesting insights. These insights cover aspects of being a solder in the modern era that might be unique across many countries. However, it also covers those specific to German solders in WW2 with topics such war crimes, the holocaust and Nazism.