I use FOB for Space 1889 and Taiping Rebellion,
so it should work for BWF.. but FOB does not cover the NWF specifically.. it has Zulu and Madhist tho.
I also have DoB I which I use for info.. which does cover the NWF Pathans..
There is no 'Colonial' card deck per se.. the deck changes from game to game. So Piquet Core rules and FOB provide a
basic set of cards – a set of cards that apply to any period..
The supplements have period specific cards.
For each game, the players card deck is a different mix of these basic cards. The deck is then 'tweaked' by adding period cards.
For example, the natives might add a 'Native Mobility'
card, allowing them an extra move. The Brits might add a 'Devastating Volley' card..
You can also have scenario-specific cards that you
make up. In one of my games, the Martians get an
'Ill Omen' card which causes one faction to
check morale if and when the Brits take the temple.
In another, the Brits get a 'Heat Exhaustion' card..
ehen it turns up, all Brit movement is 1/2 until they
get re-watered from the water wagon.
In short.. it's a very robust system.
Any guesstimate when DoB II will be published..?