You're not allowed to say disparaging things about anyone in your command chain, which goes up to the president. There's also limits on your political speech, in relation to making political statements in favor of candidates.
The limits on your political speech aren't limited to service members, but also includes a pretty decent percentage of federal employees.
> False. The military completely paid for my undergrad and masters at a high quality university (50k+/yr). Zero loans. They subsidized a second masters in software engineering. After all this I still have my full GI bill that I can use for myself or pass off to my kids for their undergrad.
I'm glad that the GI bill worked well for you. It does for most people, but note that not everyone gets the GI bill benefits they are promised. I don't agree with the OP that it doesn't cover enough for a four-year college, especially if you're going to a state school.
> Or if you wanted to serve with every opportunity in the world in front of you, the military is an option.
I agree with you, in general, but it's important to note that the benefit one gets, vs the risks one takes are heavily correlated to ones status prior to entering. If you're poor, with poor education opportunities in your past, the likelihood of being enlisted, and being in a more dangerous service (and post) are substantially higher. If you're rich and had good educational opportunities, it's likely you'll be an officer, in a better service and post, with relatively low risk (and substantially higher pay).