Some of these I've asked before, but collected here for your enjoyment... 
1) What even triggered the commitment of U.S. ground troops?
2) The Vietnam war generated huge amounts of slang. What was:
a) A BUFF?
b) A Thud?
c) Puff the Magic Dragon?
d) A slick?
e) Lurps?
f) A cherry?
g) A REMF or Pogue?
h) A Spad or a Sandy?
i) A Thumper?
j) A Zippo?
3) What sort of strange beast was an Ontos?
4) What was the official designation of the Black Horse Regiment?
5) What was a Wild Weasel?
6) The first major battle between US Army units and NVA regulars took place took place at LZ XRay in Nov 14, 1965.
a) What unique US unit was involved?
b) What NVA unit was involved?
c) In what infamous location did the battle take place?
7) At least two other nations made significant commitments of combat troops in South Vietnam. Name them.
8) What was the Iron Triangle?
9) This bombing campaign was designed to force the North Vietnamese government back to the bargaining table.
10) What was the name of the operation to relieve Khe Sanh?
/bruce

1) What even triggered the commitment of U.S. ground troops?
2) The Vietnam war generated huge amounts of slang. What was:
a) A BUFF?
b) A Thud?
c) Puff the Magic Dragon?
d) A slick?
e) Lurps?
f) A cherry?
g) A REMF or Pogue?
h) A Spad or a Sandy?
i) A Thumper?
j) A Zippo?
3) What sort of strange beast was an Ontos?
4) What was the official designation of the Black Horse Regiment?
5) What was a Wild Weasel?
6) The first major battle between US Army units and NVA regulars took place took place at LZ XRay in Nov 14, 1965.
a) What unique US unit was involved?
b) What NVA unit was involved?
c) In what infamous location did the battle take place?
7) At least two other nations made significant commitments of combat troops in South Vietnam. Name them.
8) What was the Iron Triangle?
9) This bombing campaign was designed to force the North Vietnamese government back to the bargaining table.
10) What was the name of the operation to relieve Khe Sanh?
/bruce