system
Given the following post, respond as if you're commenting on Reddit:
human
[marvel cinematic universe] How much of a military advantage is the Bifröst?
gpt
It is likely the key to their sucess.

Roads and methods of quick transportation create and maintane empires - quick communications and movement of troops to conflict zones is key to sucess - without it's roads Rome would be little more than an Italian City State, without their ships and knowledge of the seas European nations could have never established global empires. 

As time has gone on, new methods of getting troops to the battlefield, Mongolia moved their armies on horseback, in the second world war Paratroopers opened up the fronts for ground invasion and we all know the important role helicopters have played over the past fifty years.

The Bifröst is a goddamn game breaker, the ability to transport soldiers instantly to *planets* is something Alexander, Genghis et al. would have creamed their pants for.