For one...
The word personnel is not a singular amount unless it's a singular group. Personnel means a group of people employed by an organization. So if you have 1 personnel, you do not have one person, since you would have one group of people.
If you had 5 personnel, you do not have 5 people... you have five groups of people.
Secondly, I do not believe that personnel in this role-play are hard factor numbers and our main characters are the bigger parts of the equation. There are going to be different amounts of personnel (more groups possibly for richer districts versus smaller and so on) and if you are using your personnel or not (or they are dying or not), etc... etc... A lot of variables and factors.
To want hard numbers, the most realistic questions, outcomes, answers, etc... would take way too long to actually do for an role-play that is setup like this and IF you wanted to spend that time, you'd have to make a whole system like Dungeons and Dragons 5e or use a pre-made system like DnD 5e for everything.
Edit:
What I am emphasizing above is being a little creative, a little flexible, and not overly worrying about accounting for each number. That would be like worry for every single background character in a Marvel movie or action movie in general. It doesn't make sense too.
Because if that is what we are doing, then our lovely GM would have to figure out how many personnel we each would have. Which means she would have to figure out how many are in a group of 1 personnel (be that the same or not for districts which are classified different) and then we would all have a horrible time either calling them thing 1 and thing 2, naming them, and putting little backgrounds on who they are and that could literally mean doing little quick sheets of 100 people for your business.
So why stop there? If we already gotta fill out a quick little sheet for ALL and each person that you have control over. Why not make a quick little sheet for every civilian in your district(s)? It would only make sense to make it more realistic and so on.
Except... that would suck all the fun out of the roleplay by having to pre-start or stop to get all this information to be setup to have the most realistic or hard factual outcome.