From Halopedia, the Halo wiki

A redirect is a wiki system which works when one types into the search bar, something that does not match the exact title of the desired page, but this automatically redirects the viewer to the page. However, the wiki doesn't just know what to redirect, it is up to users to create redirects based on what is likely to be typed in to find certain pages. For example, there are many redirects to the Halo 3: ODST page, such as when a person searches for Halo 3 ODST, Halo ODST, etc. Even these minor differences need redirects to help people find the right page.

This is how to make a redirect:

As an example, if one wishes to make A a redirect to B, he or she must do the following:

  1. Type "A" in the search bar.
  2. Create the article titled "A", with the only content of the page being: #REDIRECT [[A]]. (It makes no difference whether "redirect" is spelt in capitals or lower case.)
  3. Save the page. You can then test it by typing into the search bar the redirect you just made, and it should go to the desired page.

After this, the redirect is complete. Please do not create joke redirects such as "noob" going to a certain user, or any other jokes of this sort. These will be deleted and the creator may receive a warning or be blocked. Also, do not create mainspace redirects to Halopedia pages, categories, or any other type of article besides mainspace articles. Do not make category redirects, MediaWiki redirects, template redirects, or user/user talk redirects (unless a bureaucrat has renamed you). The only other redirect you can make is a Halopedia redirect, as long as it goes to another Halopedia page. Failure to adhere to these rules can also result in a warning or block.