Garazone campaign

In the Garazone campaign, scientists cleverly synthesised the schrellic gland's secretions, luring 50 squadrons of interplanetary Airborne Daleks into a trap. The potency of the schrellic substitute was such that the first 27 squadrons willingly flew into the Garazone sun. The Dalek Survival Guide counted this as the second greatest defeat of the Special Weapons Daleks. (PROSE: Dalek Survival Guide)