Many Engineers experiment with the idea that homing pigeons can be trained to deliver bombs to the enemy, but most such research ends with a feathery blast and a burning loft.
Instead of shooting normally during the Shooting phase, a model equipped with pigeon bombs may release one. Choose an enemy unit that is within 24" of the model and roll on the Pigeon Bomb table below:
Pigeon Bomb Table
D6 Result
1 Bird Brain: Confused by the tumult of battle, the pigeon returns to its handler. Centre a small (3") blast template over the model that released the pigeon bomb. Any model whose base lies underneath the template risks being hit and suffering a Strength 4 hit with an AP of -1.
2-3 Fly Away Home: Perhaps wisely, the pigeon sets off towards the distant horizon. The bomb has no effect.
4-5 Dud: The pigeon drops its package over its target, but the bomb fails to detonate, instead falling earthwards at tremendous speed. The target unit suffers a single Strength 5 hit with an AP of -2.
6 Perfect Delivery: The pigeon delivers its package. Place a small (3") blast template so that its central hole is directly over the centre of the target unit. Any model whose base lies underneath the template risks being hit and suffering a single Strength 4 hit with an AP of -1.