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