Original: 1968 & ndash ; Vietnam War : The United States Department of Defense announces that the U.S. Army and U.S. Marine Corps will send about 24,000 soldiers and Marines back to Vietnam for involuntary second tours of duty in the combat zone there .
Simplified: 1968 - Vietnam War : The United States Department of Defense announces that the United States Army and United States Marines will be sending about 24,000 troops back to Vietnam for involuntary second tours .