User blog comment:J Fan/Dead Men Tell No Tales - Details: Story, Characters and Setting/@comment-1742432-20150606164331/@comment-1984959-20150609034648

Uskok pretty much covered what Greg Ellis stated. But we do have it semi-covered in the "Behind the scenes" section of the Theodore Groves article. But to simply put it here, if someone wanted specifics...
 * If one follows only the movie itself, Groves was shot in the stomach area and can be seen carried off by British soldiers.
 * In the OST audio commentary, Rob Marshall did state that Groves (and Gillette, who seems 150% dead) indeed died.
 * Despite the apparent death, Greg Ellis mentioned a possibility that Groves survived the battle.

So is he alive? Dead? Zombie-fied? Is there a Groves-related flashback? Right now I have no idea, and as confused as anyone of several of P5's set photos...more than I was while following OST's filming.