VAD is a term used by the official fan group of the actor Richard Rankin, known as The Rank and File.
In 2014, Richard Rankin (Captain Thomas Gillian) starred in the mini series “The Crimson Field” about a group of doctors, nurses and women volunteers working in field hospital during World War 1. The women volunteers were called VADs ( Voluntary Aid Detachment) and lovingly referred to as “Very Adorable Darlings”
The Vad Show
When someones drama, gossip, or influence over shadows others in a room without saying or doing anything out of the ordinary or even being there.