Vic Formation comprises three, five, or six aircraft. When flown with three or five airplanes, they create a single V-shape.
In Vic, all planes that belong to one V-shape fly at the same altitude. Those ‘on the wings’ use their leaders’ horizontal stabilizer as a reference point, keeping their own wings on about the same line as the stabilizer they are looking at.
When flying the Vic Formation with six aircraft, it is no longer possible to create a symmetrical V-shape. In this case, the formation is split into two smaller V-shapes both consisting of three aircraft (see the top right schematic).