Any veteran who served on active duty during the Korean and Vietnam Wars quickly learned that the U.S. military had its own unique language. It was a combination of acronyms, technical jargon and a considerable sprinkling of vulgarities. “Nice Talk, GI,” is a compilation of terminology used, overheard, or encountered by the author during his service with the U.S. Army from 1969 to 1971. An invaluable resource was the author's own “Soldier Notebooks,” kept during BCT and AIT. Also, while stationed in Korea, he served with a number of Vietnam War Veterans, and learned a significant amount of technology from them. An invaluable source was provided by access to Pacific Stars & Stripes newspaper from the era. While the work does not claim to be definitive, it is representative of terminology used by military personnel between 1950 and 1975.