I first became aware of him a few years ago when Jeremy Clarkson made a short series called War Stories. It turns out his father-in-law was Major Cain. Amazingly Cain never mentioned his VC to his daughter, she only found out after his death he had been awarded it.
Part of his citation reads.
“On 20th September a Tiger tank approached the area held by his company and Major Cain went out alone to deal with it armed with a Piat. Taking up a position he held his fire until the tank was only 20 yards away when he opened up. The tank immediately halted and turned its guns on him, shooting away a corner of the house near where this officer was lying. Although wounded by machine gun bullets and falling masonry, Major Cain continued firing until he had scored several direct hits, immobilised the tank and supervised the bringing up of a 75 mm. howitzer which completely destroyed it. Only then would he consent to have his wounds dressed.”
The full citation can be read here.
After some searching I’ve found the BBC documentary, it is well worth a watch.