Final Fantasy XIV Database - Ffxivpro.com

Because the LS Community won't display a rank higher than First Lieutenant, the Captains out there aren't getting credit for this in their achievements.

I think one way that FFXIAH could take the initiative to fix this is let us change our titles to "Captain" and scan us that way. Even though LS Community says our rank is First Lieutenant, the Captain title would certainly be definitive proof that they do indeed have the Captain Wildcat Badge.

For a reference, you can change your title to Captain in Aht Urghan Whitegate by the NPC Koyol-Futenol at (E-9). The price is 300g.