I’ve been involved in 3 nominations (not ATC) 2 for the same person, none successful. We thought we’d done enough the second time as we’d found some more evidence. Both of these at the time had done over 30 years of unstinting local community volunteering being the lynch pin for several groups. I know one CBE but he’d done a lot of high level government work for a couple of years beforehand and said that’s why he got it, not the preceding couple of decades of work in high level positions in business.
As said you need to get the supporting documentation in order first. Not only do you not nominate for a specific, the timeframe is apparently upto 2 years from the date the nomination was submitted for the plebiscite. If nothing after 2 yrs give it another spin. Don’t know if this is the same for military ones, but just be aware.