Reply To: htaccess redirect code – redirect old page to new page

Instead of trying to do a Rewrite it is better to do a Redirect for this.

RedirectMatch 301 ^warfare/library/(.*)page_id=193$ http://saint-mike.org/warfare/library/spiritual-warfare-prayer-catalog/

or

RedirectMatch 301 ^warfare/library/(.*)page_id=193$ http://saint-mike.org/warfare/library/?p=817