Soldiers World War, 1939-1945 41 History 38 Campaigns 19 World War, 1914-1918 13 Atrocities 10 Military life 8 more ... Officers 6 Regimental histories 6 Tank warfare 6 Prisoners of war 5 Psychological aspects 5 Psychology 5 Armed Forces 4 Sexual behavior 4 Social conditions 4 Authors, German 3 Concentration camps 3 Heads of state 3 Intellectual life 3 Intellectuals 3 Mental health 3 Moral and ethical aspects 3 Social aspects 3 Women 3 Childhood and youth 2 Children of disappeared persons 2 Command of troops 2 Electrification 2 Electrotherapeutics 2 less ...