Yes I did, did you? Or are you not aware that there is a difference between Army Reserve and National Guard? Reserve units were called up during Vietnam. With very few exceptions Guard units were not. Contrast that with the other wars of the 20th century. If you were in the Guard during WWI and WWII, you chances of getting called up were at or near 100%. During Korea and both Gulf wars, your chances of being called up were very high. During Vietnam, you chances of being called up involuntarily were near zero. Which is why membership in the Guard during that time was so popular for those who couldn't get deferments through other means.
Re-read my original post - I said "Many Guard units were activated and sent to Vietnam". Your own evidence supports this statement. You seem to be on jihad to degrade this honorable service of people in the Guard 1965-1975. No - I never said they were activated like in WWII and I never said there was a mass mobilization.
And PS - Reserves and Guard are practically the same for service and mobilization. Yes - the governor has to give permission for the Guard. Talk about splitting hairs.