Matt Helm swings in Denmark!

Bruce was fight choreographer for this film, working with world kickboxing champion and student Joe Lewis. It stars Dean Martin (Matt Helm), Elke Sommer and the ill-fated Sharon Tate. Chuck Norris makes an appearance as well. A train with a heap of gold aboard gets hijacked and Helm jumps to the rescue. The film is based on a Donald Hamilton novel.

Apparently, in the first big fight scene, it looks as though Bruce is doubling for Martin. I haven't seen the film so I can't comment on that.