Police Rank Progression titles...

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Originally Posted by Infornific

Depending on the scale you might want to go for more levels. I understand the semi-formal rule of thumb is:

Rank 1: Commands 1-5 people
Rank 2: Commands 6-20
Rank 3: Commands 21-100

with *100 subordinates for every +3 rank. [...]

This 'semi-formal rule of thumb' doesn't seem significantly easier to me than the official (Space page 189) GURPS rule of

Each level of Military Rank means that the character has about four to five times as many subordinates under his direct command.
[...]
So someone with Rank 0 has no subordinates, Rank 1 has four to five people, Rank 2 commands 16-25 men, Rank 3 has 64-125 troops, and so on.

why not just use them?