A new BBC documentary has re-examined the legacy of a controversial Scottish soldier who was dubbed "Mad Mitch" for his tough methods.

Lt Col Colin Mitchell became a national hero when he led his Argyll and Sutherland Highlanders back into the Crater area of Aden in July 1967.

The British army had earlier pulled out of the district after 24 soldiers were killed by insurgents.

But Mitchell's reputation has been tarnished by allegations of brutality.