I was in the Army for 14 years, 3 active and the remainder in the reserves. While active and being combat arms you so much as sneezed the wrong way you would draw unwanted attention tp yourself. Being a military brat this was the norm for me, dress right dress was what I was brought up with so it came naturally to me, and trust me I was in front of the 1SG and CSM more times than I care to remember!
I had no problems with the regs whether it was Army wide or Troop/Plt level. We smoked in our tracks while downrange all the time, even with 40 some odd live 120mm rounds, we knew our 5th point of contact was toast if caught so if it came down to that we'd suck it up and drive on.
This was all back in the day before cell phones were everywhere, but someone catching you smoking while walking or smoking where you're not supposed to in garrison, let alone having the slightest malfunction on your uniform and you'd be told about it....and so would your chain of command. Suck it up and drive on.
Leaving RA and joining the USAR and being able to stick with it for as long as I did remains a mystery to me. In my eyes the level of discipline and professionalism was on par of a fast food joint at best. It was a little better in the sandbox but ultimately the lack of discipline and pride that came with wearing the uniform is what ultimately forced me out, plus the fact that I couldn't run to save my life!
If not being able to
vape in the building bothers folks so much, do it in the latrine while offloading class 1 or 2, none would be the wiser and drive on!
On the nicotine testing for employment bit, my job now does it for entry into the hospital, don't know if they do pop tests but you have to be nic free to start.