Complex sentence: Originally launched in 1966 Trenton has taken part in several mission most notably the evacuation the U.S. and Soviet ambassadors and 193 foreign nationals from Somalia in 1991.
Split into simpler sentences: Originally launched in 1966, Trenton has taken part in several missions. The most notable is the evacuation the U.S. and Soviet ambassadors along 193 foreign nationals from Somalia in 1991.