Complex sentence: Ray Mears made a documentary titled "The Real Heroes of Telemark", sticking to the facts, partly dramatised, but focusing more on the survival skills involved in the operation.
Split into simpler sentences: Ray Mears made a documentary titled "The Real Heroes of Telemark". Despite mainly sticking to the factual eveidence, some scences like the film were partly dramatised, but focusing more on the survival skills involved in the operation.