100 Piece Army Skeleton Warriors Ready to Take Over

How wide is the base?

I use battlemaps that hve the 1 inch square(s) grid. Will these work?

Are the bases any good, or do the minis just fall over all the time--like the disappointing modern green plastic army men?

i purchased these a little while ago and found a strange peice, my question is, what is it? is it a skull lanturn? an arm? it doesnt have a stand