Complex sentence: At the age 0f 28 he was awarded the DSO for his bravery and leadership of the 1942 Operation Frankton also popularly known as the Cockleshell Heroes and the subject of a feature film titled The Cockleshell Heroes.
Split into simpler sentences: At the age 0f 28 he was awarded the DSO for his bravery and leadership of the 1942 Operation Frankton. The operation is also popularly known as the Cockleshell Heroes and the subject of a feature film titled The Cockleshell Heroes.