Complex sentence: During the initial crossfire with Colombian Army troops, one of the guerrilla operatives, a woman, was injured and she required a medical doctor to attend to her, who advised her to be hospitalized but she refused and later died.
Split into simpler sentences: During the initial crossfire with Colombian Army troops, a woman with the guerrillas was injured and required a medical doctor to attend to her. The doctor advised her to be hospitalized, but she refused and later died.