In the scenes before, the ooze organism heals them There are a few reasons i can see why the us military didn't/couldn't help during wakanda battles At the end of the civil war, everyone was a wanted criminal or had disobeyed the us government So, why would us military assist them In infinity war, the following conversation goes on between cap and the secretary And you think, all is forgiven
In the beginning of avengers Infinity war we saw that hulk started beating up thanos easily but suddenly thanos overpowers him Probably, the only way that would be possible, would be because thanos Iron man's booster (as seen in avengers Infinity war ' second trailer) should be able to fly away from a much weaker thanos who is now without the stones Specifically to go to someone like hulk who has proven to be able to survive after snapping
Not to mention all the other avengers are nearby
WATCH
