Landships II

Craig, have you looked here:
sites.google.com/site/landships/home

Here is some info, maybe it helps:

sites.google.com/site/landships/home/generaltankinformation/brigade-and-battalion-organisation

Outline
1916
6 x 25 tank companies. 25 crews
-           4 x 6 tank sections and 1 spare tank 
 
1917 and Early 1918
3 Tank brigades
- 2 or 3 Tank battalions, 60 crews each
            -  3 companies of 12 fighting tanks and 2 supply tanks.
                        - 3 x 4 fighting tank sections, 1 x 2 supply tank section. 
                        OR at Cambrai and mostly thereafter
                        - 4 x 3 fighting tank sections, 1 x 2 supply tank section. 
 
1918 - August to October
5 (later 6) Tank brigades, 3rd Brigade is light
            Heavy Brigades
- 3 x 36 Tank battalions, 60 crews each
            -  3 companies of 12 fighting tanks and usually 2 spare tanks
                        - 4 x 3 fighting tank sections.
-1 x supply company – 24 supply tanks
                        - 4 x 6 supply tank sections.
 
            3rd Light Brigade (only 3rd and 6th Battalions light, 9th battalion still heavy)
- 2 x 48 Light Tank battalions, 1 x 36 Heavy tank battalion, 60 crews each
            -  Light tank battalions
- 3 companies of 16 fighting tanks.
- 4 x 4 fighting tank sections
-1 x supply company – 24 supply tanks
                        - 4 x 6 supply tank sections
Willem