There is a Confederate Pension Index at the website of the Louisiana Archives:

https://www.sos.la.gov/HistoricalResources/ResearchHistoricalRecords/LocateHistoricalRecords/Pages/ConfederatePensionDatabase.aspx

The images of the applications are available at the FamilySearch website, but they will require you to register:

https://www.familysearch.org/search/catalog/1838535?availability=Family%20History%20Library