Any man that accepts the Generosity of a Host Country that takes him in and he then goes to war supporting an old home country for ANY reason religious or not is guilty of treason to his adopted country ..it shows no allegiance to the Country that took him in. Their Passports should be revoked and re entry barred they make themselves Alien to the Host Country. You cant serve two Masters !
If you are Australian you should be nothing else 100 % …Same for Any American that goes to fight in Syria or anywhere else his Government didn’t send him to he should be barred from re-Entry and Passports revoked ! It demonstrated where his allegiance is by his own choice .
No country can survive with free lance soldiers out of control !
My grandfather came to America in 1906 and said he was an American now ! He went to night school to learn English ,sent for his two brothers and told then to do the same learn English and be nothing but American.I agree totality with this commitment !