Originally Posted by
nooblet
Massacre pre-war is garbage unless you have a guarantee of war declaration.
If you landwave and get an immediate declaration of war, your provinces are no more landfat, but theirs get pumped up slightly due to gbp. However, hitting for land against an overdrafted target will kill more peasants than a massacre, and set the target up to be land-chained easily. Additonally, the gained land usually gives the best benefit, adds a buffer against enemies who chain you, and gives build/spec credits.
I'd rather use Plunder/Learn in the opening wave, unless I want to put a lot of massacres on a t/m or hybrid province. Even then, massacres out of war are weak, and only piss off the target kingdom if there is no war declaration.