Complex sentence: The Actions along the Matanikau were two separate but related engagements that occurred in September and October 1942 along the Matanikau River in Guadalcanal, the first taking place between 23 and 27 September and the second between 6 and 9 October.
Split into simpler sentences: The Actions along the Matanikau were two separate but related engagements that occurred in September and October 1942 along the Matanikau River in Guadalcanal. The first took place between 23 and 27 September and the second between 6 and 9 October.