During the period between the two world wars, it made good sense to think of the political spectrum as extending between two totalitarian extremes, with totalitarian Communism on the left and totalitarian fascism and national socialism on the right. The Spanish Civil War and the street battles between Communists and Nazis in Weimar Germany did in fact take place in societies where many (if not most) were drifting toward one totalitarian pole or another.No it didn't. F Hayek noted that in Weimar Germany, Nazis and Communists may have fought, but it was a turf war, because they we competing for that same thing, followers of the collectivist mind set. Followers of one could become followers of the other.
Their basic enemy was the supporter of individual liberty - Western Liberal Democracy as it was then - who could noyt be a collectivist.