Why did Guy Fawkes join the Spanish Army?

Guy Fawkes joined the Spanish Army primarily due to his strong Catholic beliefs and his disillusionment with Protestant England under King James I. He sought to support the Catholic cause in the ongoing conflict between Protestant and Catholic forces in Europe, particularly during the Eighty Years' War. Fawkes believed that fighting for Spain would help advance the Catholic Church's interests and potentially assist in the overthrow of Protestant rule in England. His military service in the Spanish Army also provided him with training in explosives and military tactics, which would later play a crucial role in the Gunpowder Plot.