Complex sentence: In 1864, sixteen European states adopted the first-ever Geneva Convention to save lives to alleviate the suffering of wounded and sick persons in the battlefield, and to protect trained medical personnel as non-combatants, in the act of rendering aid.
Split into simpler sentences: In 1864, sixteen European states adopted the first-ever Geneva Convention to save lives and alleviate the suffering of wounded and sick persons in the battlefield. As well as to protect trained medical personnel as non-combatants, in the act of rendering aid.