Yearbook Update - 1920

​15th Brigade, Canadian Field Artillery at Hastings Park, 3 July 1919
The City of Vancouver Archives has the photo tagged as 1919, however the Brigade wasn't formed until 1920. Your task is to help me identify the members in the photograph. I have two of them, only 69 more to go.
Rear Row - 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
5th Row - 16, 17, 18, 19,20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31
4th Row - 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46
3rd Row - 47, 48, 49, 50, 51, 52, WO1 Charles Minter, 54, 55, 56, 57, 58
2nd Row - 59, 60, 61, 62, 63, 64, 65, 66
1st Row - 67, 68, LtCol Frederick Coghlan, 70, 71, 72