As I watched Captain Swagger, I became suspicious that persons only seen in talkies were in this film. Checking IMDb, I see it used the Photophone system. As another reviewer notes, it was supposedly a part-talkie. I suspect it was more than that, because I see no scenes that stop dead for talking; all the scenes seem to flow. In any event, the version available has no sound, so it's impossible to tell. I suspect that Pathe simply added intertitles to the sound version, wit out any re-shoots.
The plot contains a lack of adventure after the war beginning. Contrast this to the 1929 Coleman version, which after a slow start, moves at a fast clip, with splendid villains and sets. Larocque is adequate, tall and handsome, but the lack of sound removes any conviction from his role. The coincidences and motives are not believable. Worth seeing once for the historical perspective.