Life in the border lands of helot prime is usually a mundane agricultural existence. Pigeon breeding and racing is one of the most popular pastimes in the countryside (compared to the cities where the vicious guard dog cherub drones that roost in the spires of the churches of Tzar devour all other avian life).
In the occult war the Borderer's use pigeons as a means of cheap and easy communication or reconnaissance (with the appropriate photographic equipment attached).
Alternatively pigeons are also used as living controlled bombs. Cerebral interfaces are wired into the pigeon and an explosive charge is strapped to it's chest, and the controller is able to steer and guide the pigeon into enemy positions where it is finally detonated.
A medic and an officer: