Complex sentence: The two brothers are forcibly conscripted into the army and their way to the battlefield, experience the horror of war such as surviving their first artillery strike in which Jin-seok nearly dies of a heart attack in shock from the first experience.
Split into simpler sentences: The two brothers are forcibly conscripted into the army and go on their way to the battlefield. Over there they experience the horror of war such as surviving their first artillery strike in which Jin-seok nearly dies of a heart attack in shock from the first experience.