Mercenaries of the Rio Grande

★★★★★

Original title: Der Schatz der Azteken / Treasure of the Aztecs

1965 · 1 h 41 min

Directed by Robert Siodmak · Germany · German Expressionism

Adventure

Watch trailer

Cast

Lex Barker Gérard Barray Rik Battaglia Michèle Girardon Alessandra Panaro Teresa Lorca

Credits

Written by: Karl May

Plot

Dr. Karl Sternau, the personal physician of the count Bismarck, who spent much of his youth in Mexico, is sent back to that country during the occupation by French troops in the service of the Austrian 'Emperor' Maximilian, to carry an encouraging letter from U.S.

Sinekatalog’s take

A European western-adventure about a doctor sent on a political mission to Mexico. Routine and episodic, with some scenic appeal. For devotees of sixties continental adventure.Sinekatalog’s own editorial review – not a user or critic quote.

View on Letterboxd ↗

Ratings

IMDb: 5.3 / 10 (737 votes)
IMDb rating and vote count from the IMDb ratings dataset (October 2026). Scores change over time.

If you liked this

Picked by director, genre, era and shared cast. Titles only, no spoilers.

• Pyramid of the Sun God 1965 · Robert Siodmak · IMDb 5.2 · Same director
• The Yellow One 1964 · Robert Siodmak · IMDb 5.8 · Same director
• True Grit (1969) 1969 · Henry Hathaway · IMDb 7.4 · Viewers also liked
• The Treasure of the Sierra Madre 1948 · John Huston · IMDb 8.2 · Viewers also liked
• Major Dundee 1965 · Sam Peckinpah · IMDb 6.7 · Viewers also liked
• Flaming Frontier 1965 · Alfred Vohrer · IMDb 5.8 · Similar genres