Just make them watch reruns of the teletubbies for a month straight no getting up or anything, completely destroy their brains then make them duel each other in a fight to the death. Make them kill each other.
Look at all of you, I'm so proud of you all, this is how our country started out, us all helping each other when we broke away from the crown in the 1st place. What a sight to see really. 240 years have gone by since then and your all still the very same as you were then when you landed on these shores. Exploring and crafting a new future for us all. It's like im in a time machine tbh.
That's just it, we can all mimic those founders and essentially become who they were weather your citizen or military and it unlocks you from your nation of origin into a human collective force for good. Don't doubt anything, your making history at this very moment.
Don't squabble over ideals, unite for you all have a common foe now, you walk side by side now for the good of the earth vs the evil facing us all.