Complex sentence: During the war, 57 HV troops were killed or injured by mines in 1992, while 169 were killed or injured in 1995, most of them during operations Flash and Storm, light casualties considering the 130,000 HV troops involved.
Split into simpler sentences: During the war, 57 HV troops were killed or injured by mines in 1992. In 1995,169 were killed or injured (most during operations Flash and Storm) out of 130,000 HV troops involved.