African Americans and the Vietnam War

Fighting on Two Fronts: African Americans and the Vietnam War by James E. Westheider
In your first paragraph, please summarize the the book as an introduction.
In the following paragraphs, please address these prompts/ideas:
What were the historical reasons that African Americans were originally optimistic about military service in Vietnam?
How did African Americans become over-represented on the war front and in the casualty counts, and why did those numbers wane over time?
What were the (sometimes) subtle and (sometimes) overt real and perceived types of racism faced by African Americans in the military during the Vietnam War?
In your last paragraph, summarize your responses as a conclusion.