1969: The United States is deeply involved in the Vietnam War, though many Americans do not believe their country should be involved.

Today: Because of the outcome of the Vietnam War (the communists won), the United States has avoided becoming involved in long-term, large-scale wars.

1969: As would happen for some years, many U.S. veterans of the Vietnam War return home to a country that does not understand them and often rejects them

Today: The Vietnam Memorial in Washington, D.C., ensures that Americans will not forget the sacrifice of American soldiers in Vietnam.

1969: While a few authors/veterans like Rabe are writing about their experiences in and impressions of the Vietnam War, their number is relatively small.

Today: Numerous movies, books, and plays about the Vietnam War are in circulation. The experience has been explored from many angles, and new projects appear regularly.

1969: The...