Complex sentence: She was assigned to Kyoto on December 1997 to take the post of Director, JSDF Hospital Maizuru, for the first time Japan had a woman in charge of a JSDF Hospital.
Split into simpler sentences: She was assigned to Kyoto on December 1997 to take the post of Director, JSDF Hospital Maizuru. For the first time, Japan had a woman in charge of a JSDF Hospital.