CT Only: Question on Striker Units

[atpollard]

So I was trying to get my head around using Striker when I get to Book 1, pages 12-13.

Page 13 describes a 'Unit Card' and page 12 has a 'Typical Unit Card' that begins:

1st Platoon, 2nd Section
17: Morale 10, average initiative
Section NCO; veteran; GR


So I figured out the "Morale 10" and "Average Initiative" parts ... but what the heck is the "17:"?
I can't find where they explain it and the various "Teams" have values ranging from "3: Morale 6, average initiative" to "41: Morale 4, low initiative".

3 to 41 is a broad range of values, and I can't figure out what they represent.

Can someone explain it to me?

 

[Leitz]

My guess would be in Rule 6.C., bottom of page 10. It's just a unit identifier.