Every army gets a few like that.
It is a gross insult to suggest that a significant number of 1914 volunteers joined for that.
Such would have joined anyway, and the number of volunteers was many times the prewar number.
Mostly they did not like Belgium being invaded and were angered by the atrocities caried out on Belgian civillians.
Again I suggest starting a different thread for slagging off and insulting those we are remembering here.