Complex sentence: Military Information Services- "Wojskowe Służby Informacyjne" or WSI was a common name for Polish military intelligence and counter intelligence agencies that was created after the fall of the communist regime in 1991.
Split into simpler sentences: Military Information Services- "Wojskowe Służby Informacyjne" or WSI was a common name for Polish military intelligence and counter intelligence agencies. That name was created after the fall of the communist regime in 1991.