His letters home were filled with his politically sophisticated observations and eyewitness accounts of some of the most dramatic events in history: segregated military units in an Army that was fighting against racism and oppression, the D-Day landings in Normandy, the liberation of France and Belgium, the Battle of the Bulge, the encounter with the Germans, the early stages of the occupation of Germany, and the horrors of the discovery of the concentration camps. His writings establish the clear link between the Spanish Civil War and World War II. The letters are also filled with his love for his wife, his loneliness at their separation, and his hopes and dreams for their future.