Maps detailing the locations of battles and major cities involved in the Vietnam War can be found in many historical books and online resources, including West Point Military Academy's Department of History archive. These maps look at the war from the U.S. Military tactical perspective.
Each map in the West Point Vietnam War collection specifically corresponds to the labeled battle or offensive during the war. The arrows, indicating military movements on both sides of the battle, are clearly labeled for the reader.
Another public online resource, PBS.org offers a large body of information on the Vietnam War, including detailed maps from various periods. Paired with short descriptions of the each period, these maps demonstrate both the evolution of tactical warfare in Vietnam and major turning points in the war.
In addition to these online sources, many detailed maps are available through print sources, such as "Historical Atlas of the Vietnam War" by Harry G. Summers, or "Where We Were in Vietnam" by Michael Kelley. Another excellent way to find maps is to check a local library. Many municipal public libraries house large collections of maps in special rooms that can be accessed by scholars and sometimes by members of the public upon special request.