If you served in the military prior to 2009 and paid (12 months) into the Montgomery GI Bill, you may be eligible to recoup 12 months of educational benefits
This is the link to the information for eligibility: https://benefits.va.gov/gibill/rudisill.asp
Halfway down this page, you will see a link for the VA form 22-1995 https://www.va.gov/education/apply-for-education-benefits/application/1995/introduction?toggle=true
You may have to log in to access the form
Fill out the 22-1995 online
You will get a confirmation email
Decisions are taking 60 days on average