HRC has just issued this to the military. I am only copying and sharing from a now "public" piece of knowledge (No OPSEC broken). Fort Knox Kentucky soldiers and families are not happy atm.
#Soldiers are prohibited from participating in partisan political activity. While you may ‘follow’, ‘friend’ or ‘like’ a political party or candidate running for partisan office you may not post links to, share or re-tweet comments or tweets from the Facebook page or twitter account of a political party or candidate running for partisan office. Such activity is deemed to constitute participation in political activities.