Watch G.I. Joe: Retaliation (2013) HD Full Movie Free on SolarMovie. Watch G.I. Joe: Retaliation (2013) online free. The G.I. Joes are not only fighting their mortal enemy Cobra; they are forced to contend with threat...The G.I. Joes are not only fighting their mortal enemy Cobra; they are forced to contend with threats from within the government that jeopardize their very existence.