You're right.

And the military in movies used to be depicted as inflexible, stubborn, paranoid, incompetent, and usually either "the bad guys" or authorities that impeded the progress of the main characters. (With exceptions; I'm not forgetting about Top Gun).

Then there was a sudden switch, with the military shown with cool gadgets, airplanes, tech, heroics, and generally being glorified. The transition must have happened before the first Transformers, but it was in full swing by then.

Were one of a conspiratorial mind, one would guess massive amounts of money were spent in changing this image.