The British Army’s pluralistic religious culture was tenacious, proving responsive and adaptable to change. The RAChD, despite its mixed performance in previous decades, emerged from the War on Terror having demonstrated its abiding value. In the wider Army (and despite more soldiers professing ‘no religion’), recruitment patterns, the perils of active service and the religious character of mourning and Remembrance all conspired to maintain an unusual level of religiosity – or, at least, of religious susceptibility. The religious world into which it was sent also affected the Army, producing in the RAChD a strategy of professional mentorship and religious engagement and, from soldiers themselves, a sometimes hostile reaction against ‘religion’ – albeit one that was tempered by a generally favourable view of chaplains and their ministrations. In ethical terms, religion did not serve as a moving force in addressing the pernicious aspects of Army culture around the turn of the twenty-first century, but, through the abiding purchase of the just war tradition, it coloured its responses to the dilemma of killing, and to the ethical challenges of war.