This time is beat the camps by (contra)buffing them. Every player has abilities & you need to disable them by buffs you need to make in the Provision House & Improved Provision House.
On all the maps is stated what's in every camp & told how many 'abilities' of each type there are & how to take them out.
If you want to predict your total needs check this spreadsheet:
Make a copy on your own - it contains a message board for detailed updates.