The signs voice their concerns about the role al Qaeda is playing in the rebel forces. One sign said "I didn't join the Navy to fight for al Qaeda in a Syrian civil war."
Another stated, "Obama, I will not deploy to fight for your al Qaeda rebels in Syria. Wake up people."
While they may be using freedom of speech and posting anonymously, active members of the military may be violating the Uniform Code of Military Justice by going public with their complaints.
If the people posting are truly members of the military, the could be court-martialed if their identities are discovered.
Huffington Post contributed to this report.