I agree that colonial attitudes are a key element of this I think it unlikely soldiers will refuse to fight.
If you join the army you quite clearly abandon your responsibility to act in a moral way. You no longer judge situations and make your own decisions- you are bullied, beaten, humiliated, and indoctrinated into a mindset of total obedience. Soldiers who question authority get courtmartialed, imprisoned, or eventually discharged. Any human with a questioning mind, or a sense of personal responsibility will not willingly abandon that for the unthinking obediance to commanding officers. All soldiers are inherently cowards- prepared to kill strangers because they are told to, prepared to absolve themselves of the responsiblity for murder because they are "following orders" or because they "trust their leaders". I despise anyone prepared to kill on an order, no matter how well they know or trust the person giving the order. Soldiers are not brave men fighting for justice and peace, they are ill-informed, uneducated thugs, who choose a life of masculine brutality and simplicity because real creative constructive work is beyound them.
If they asked questions, they might not have inhaled so much radiactive dust in the last war (from their own weapons!) and then they wouldn't be suffering from gulf war syndrome.
But they didn't question the morality of using radioactive metals against "the enemy", they didn't question the long-term effects of these "depleted" uranium weapons, didn't care about the civilians who would get cancer, or the babies who would be born mutated.
cowards.