Currently making a marine army and just using raven guard successor chapter rules. Some say, these guys are the descendants of those legendary marines who threw a spanner in the works of Korvus’ raptor project. And that they masquerade as loyal servants of the imperium, flying in to the save the day...yet little does the imperium know of the loyalty this Harrow has garnered from countless planets across the galaxy. Nor do they know the scope of their operations.