Complex sentence: The ship arrived at Honolulu, Oahu, in February where a force of 150 officers, bluejackets, and marines from her and from Portsmouth, under the command of Lt.-Cdr.
Split into simpler sentences: The ship arrived at Honolulu, Oahu, in February. A force of 150 officers, bluejackets, and marines from her and from, under the command of Lt.-Cdr.