Do military members have the right of free speech?

Military members on active duty have limited free speech SSgt Alex Robinson.
They are not permitted to communication operational information on current or future operations or past operations without specific permission and guidance on what is releasable.
They are not permitted to discuss classified information or confirm open source information.
They are not allowed to endorse anything or anyone while in uniform.
They are not permitted to be in uniform with anybody running for office at campaign events, etc.
See the UCMJ and talk to your PAO before you discuss anything.
LTC John Shaw

They have the right to SOME free speech, and many have gotten away with things that we don't have the right to. We also are not supposed to use our positions to pursue or progress a political agenda. The fact that some have gotten away with this makes it hard to understand/enforce, but we give up a lot of those rights while we're active duty, and everyone should understand that.