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SAAbbrev. for spherical aberration.
(Sturmabteilung; known in English as Storm Troopers), a paramilitary unit of the National Socialist Party in Germany from 1921 to 1945. The SA was an instrument of terror used against opponents of fascism.
After the fascists seized power in Germany in 1933, the SA was turned into an auxiliary police force; members of the organization were used as guards in the Nazi concentration camps and were responsible for some types of military and paramilitary training. In early 1934 there were more than 3 million members of the SA, mostly from petit bourgeois strata. On June 30, 1934, the fascist leadership, taking advantage of unrest within the SA caused by the failure to fulfill the promises made by the Nazi leaders to the petite bourgeoisie, liquidated the discontented members; those killed included E. Röhm and other leaders of the SA who tried to use the discontent of the rank and file to strengthen their own position. After the events of June 30, the SS (Schutzstaffel), which until then had been subordinate to the command of the SA, became a separate organization. The SA was outlawed after the defeat of German fascism in 1945.
SA(1) (Security Association) The establishment of a secure transmission session. It includes authentication and the negotiation of the method of encryption as well as the exchange of secret keys. See IKE.
(2) See selective availability and situation awareness.