Class warfare is always a domestic and macro-scale conflict between the different factions in the same country. True or false?

Question

By stark contrast, WW1 & WW2 were international conflicts, which had nothing to do with class warfare.

True or false?

Answer 1

Class warfare is between the capitalist class and the working class. Not ‘factions’. WW1 and WW2 were fought between capitalists for control of most of the world. 

Answer 2

False. Only successful Class War has been fought with macro-scale.