Complex sentence: On 23 May 1970,21 Raiders dressed in NVA uniforms staged a cross-border raid against a supply center at Moung Sen. By May 29, NVA patrols brought the Raiders to bay and they dispersed into the jungle, only to be hunted down almost to a man.
Split into simpler sentences: On 23 May 1970,21 Raiders dressed in NVA uniforms staged a cross-border raid against a supply center at Moung Sen. By the 29th, NVA searchers brought the Raiders to bay. The Raiders then dispersed into the jungle, only to be hunted down almost to a man.