Complex sentence: Trujillo participated in clearing operations on the airfield with other members of his platoon during the morning of October 25, and in an intense firefight against a counterattacking Cuban element near the True Blue Campus of the St. George's University School of Medicine later that afternoon.
Split into simpler sentences: Trujillo participated in clearing operations on the airfield with other members of his platoon during the morning of October 25. Trujillo also participated in an intense firefight against a counterattacking Cuban element near the True Blue Campus of the St. George's University School of Medicine later that afternoon.