You can download English subtitles for G.I. Joe: Retaliation (2013) from several reputable subtitle databases

How to Download English Subtitles for G.I. Joe: Retaliation (2013)

How can I troubleshoot subtitle sync issues with G.I. Joe: Retaliation if they're not perfectly aligned?

Legal Alternatives (No Download Required)

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OpenSubtitles

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Moviesubtitles.org

: A focused site for movie-only subtitle files.