Thank you ShaunJ

I might have found Edward leaving the Army, record found at FindMyPast,
British Army Service Records
Series: W0 22 Royal Hospital Chelsea: Returns Of Payment Of Army And Other Pension 1842-1883
Image shows,
Permanent Chelsea Pensioners
Belfast Pension District Advice List
Money Order Account
for the first day of October 1882
No; 1002
Amount: £5 3s 5d
Where Payable: Waring Street
To Whom Payable: E MCCANN
Rank: Pte
Regiment: R Bde
Rate of Pay or Pension: 1 1 1/2
Daisy