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In page ETA (separatist group):

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ETA was initially organized in extreme hierarchy: a leading figure at the top, delegating into the logistical, military and political sections. Reports from Spanish and French police point towards significant changes in ETA's structures in its later years. ETA divided the three substructures into a total of eleven. The change was a response to captures, and possible infiltration, by the different law enforcement agencies. ETA intended to disperse its members and reduce the effects of detentions.[citation needed]