So much to learn

So, I have been working on my book for 4 to 5 years.  That's not counting the time I spent collecting information from the Veterans. 
I'd say most of the first year was spent researching things.  Lots of things.
After I learned to decipher the Daily Staff Journal, I moved on to other things. Like, what time does the sun set in Vietnam in March? What does a rice paddy smell like?
What is the jungle like in Vietnam? or the other areas?
There is so much to learn. What weapons do the men carry? What's a claymore?  What's  C4? What's a Spooky? How do you spell medivac? Medivac or Medevac? (either is correct) booby trap or boobie trap? What kinds of boobie traps are there? What's a Bouncing Betty?
Learn all about these things in my book!