Upload .WAR file to an FTP server

I've just finished a web project, working with Struts2, and now I want to add this project to my FTP site. The site runs smoothly on TomCat 8, but I am not sure how to deploy it to an actual site.

How do I add this .WAR file that has .jsp and .xml files to a website? I've tried to just put it in a directory and launch it with fileZilla, and it doesn't work.

What should I do to launch my Struts2 project to my FTP site?

Thanks!