Final answer:
Postwar for African Americans was marked by continuing struggles against discrimination and racism, despite their significant contributions and sacrifices during wartime. Leaders like W. E. B. Du Bois articulated the ongoing fight for democracy and the postwar period saw both oppression and a strong, lasting movement for civil rights.
Step-by-step explanation:
The situation of blacks after the war as described by Willis and other sources reveals a complex struggle. African Americans fought valiantly during wars, hoping that their service would lead to greater freedom and equality. However, upon return, many found that discriminatory laws and racist attitudes persisted. Prominent figures like W. E. B. Du Bois captured this sentiment, proclaiming a continuous fight for democracy despite the resistance from white Americans who aimed to restore the prewar status quo.