Complex sentence: Engagement range is up to 12 km (1-7.5 miles) with minimum range varying between 100-2000 m (328-5,621 feet), depending upon version and an effective altitude of 10-6000 m (33-20,000 ft).
Split into simpler sentences: Engagement range is up to 12 km (1-7.5 miles) with minimum range varying between 100-2000 m (328-5,621 feet), depending upon version. Effective altitude is 10-6000 m (33-20,000 ft).