Complex sentence: The basic operational concept bears some similarity to the BLU-82 "Daisy Cutter", which was used to clear heavily wooded areas in the Vietnam War and in Iraq to clear mines and later as a psychological weapon against the Iraqi military.
Split into simpler sentences: The basic operational concept bears some similarity to the BLU-82 "Daisy Cutter", which was used to clear heavily wooded areas in the Vietnam War. Decades later, the BLU-82 was used in Iraq, first to clear mines and later as a psychological weapon against the Iraqi military.