well if u can read, i have postet here the description according to wikipedia, directly from the source u gave:
It also states that it was founded after in 1932, the communist party paramilitary troups Rotkämpferbund were forbidden to exist after a big battle with the nazi party paramilitary, the SA.Antifa is a far-left, extra-parliamentary, anti-fascist network in Germany, Netherlands, Sweden, Denmark, Norway, Australia, Canada, the UK and the United States of America whose stated goal is to "smash fascism in all its forms"
The antifa was founded directly to fight the nazis in 1932, after the regular communist party troups were disbanded.
It has nothing to do with anarchism, it is a underground militia that was founded to fight against the rising Nazi party in germany before they took power.