Complex sentence: She convinced her husband, who was a senior British Military officer, to accept a posting in Jamaica which would allow them to move to Oracabessa, where he would oversee the construction of new roads and schools and she would help rebuild the local economy.
Split into simpler sentences: She convinced her husband, a senior British Military officer, to accept a posting in Jamaica. They moved to Oracabessa, where he would oversee the construction of new roads and schools and she would help rebuild the local economy.