Complex sentence: A funeral mass was celebrated at St. Matthew's, Windham, New Hampshire and burial at Arlington National Cemetery, beside her husband, who had served his country for nearly forty years and was buried there with full military honors.
Split into simpler sentences: A funeral mass was celebrated at St. Matthew's church in Windham, New Hampshire and burial followed at Arlington National Cemetery. Her husband had served his country for nearly forty years and was buried there with full military honors.