It depends on how you think of the political spectrum. If you consider it in regards to things like order, hierarchy, equality, the desire to preserve or return to some idealised social structure (one of the defining features of fascism is the idealisation of a mythologised historical greatness), the Fascism can only be understood as being at the very right end of the political spectrum.
Isn’t fascism more revolutionary than reactionary, if not in theory, then in practice?
Most the people in this thread aren't interested in giving this serious thought.
Most people have better things to do than to re-litigate settled issues for the convenience of certain ideological groups. "Was the Soviet Union far-left?" and "is fascism far-right?" are only questions because some people would feel more comfortable if all the baddies were on one side of the fence, specifically the opposite side of the fence.
As for the substance of the inquiry, obviously there is such a thing as a conservative revolution.