Mil. rank (3)

(Other definitions for col that I've seen before include "A pass through ridge" , "Lowest point of ridge between two peaks" , "dip?" , "Pass between hills" , "Mountain saddle" .)

(Other definitions for gen that I've seen before include "Informal information" , "'Information, colloquially (3)'" , "Knowledge" , "opening book, in short" , "Info" .)

(Other definitions for nco that I've seen before include "eg Corporal" , "Initially, a corporal or sergeant" , "In brief, a corporal or sergeant" , "eg RSM" , "lancejack, say" .)