John;
Organization of Infantry Division Signals (WE II/219/1):
HQ Company:
'Q' Section - Admn
'M' Section - Tech Maint
No. 1 Company:
'A' Section - Main Div HQ (Wireless)
'B' Section - Rear Div HQ (Wireless)
'C' Section - Cable
'D' Section - Dispatch Riders
'O' Section - Signals Office
No. 2 Company:
'E' Section - Fd Regt (RCA)
'F' Section - Fd Regt (RCA)
'G' Section - Fd Regt (RCA)
'H' Section - HQ, RCA
No. 3 Company:
'R' Section - Recce Regt
'J' Section - Inf Bde
'K' Section - Inf Bde
'L' Section - Inf Bde
'N' Section - RCE
Hope this answers your question regarding 'N' Section.
Cheers