Kenneth Todar's "Online Textbook on Bacteriology: The Genus Bacillus"
Read this six-page article on Bacillus. Make sure you understand the relationship between Bacillus and other spore forming bacteria. Note that Bacillus anthracis causes anthrax, a disease commonly associated with bioterrorism.
Click http://web.archive.org/web/20160314222817/http://textbookofbacteriology.net/Bacillus.html link to open resource.