SSA (Syrian Arab Army) has never allied with the FSA so called (free Syrian Army) they are on opposite sides from the start to the finish. some FSA groups have reconciled and joined the government side after getting their asses kicked or seeing they were about to get their asses kicked. but the FSA it's self is the only no jihadist group fighting Assad. even the Kurds have never really gone up against the SSA in an official way. but it is damn complicated to keep up thats for sure.