Aden was occupied by the British in 1873 and the author died around 1854. So his time was one in which the power of the Ottoman Khilafah was waning while the Western powers were on the rise. Therefore, this was a time when there were some Muslims who were replacing their pride in being Muslim and being subjects of Muslim rile with being subjects of Western occupiers and sailing under Western flags.
The author belongs to the Ahdal family who are descendants of al Imam al Hussain bin AN and are a family steeped in Islamic scholarship. They are from the Shafi'i school and live on the Western coast of Yemen on the Red Sea. The same land of the companion of the Prophet Abu Musa al Ashari.
I evo linka za knjigu: http://ia700306.us.archive.org/26/items/sayfAlBattar/sayfAlBattr.pdf