Although some organisations, such as the Society of Friends (often known as the Quakers) condemned the war, most faith groups gave their support, justifying the cause in sermons and organising services offering prayers for those with the forces. The European armies often had a close relationship to the established church, and also appointed chaplains (including a small number of Jewish rabbis) to serve the spiritual needs of those in service. Christian padres offered communion to men at the Front and behind the lines, and attempted to give some form of pastoral care.
Other religious organisations offered support in any number of ways, including tracts sent to the soldiers by groups promoting all variants of faith: Anglo-Catholic reflections, evangelical prayerbooks for study groups, and Qu’rans. More esoteric thinkers found that it was their moment to publish warnings of the end of the world, the need to repent or a whole host of spiritual-related speculations.
More practically, religious orders offered medical care, while women’s groups organised care packages and other philanthropic works.
– See more at: http://www.bl.uk/world-war-one/articles/faith-belief-and-superstition#sthash.1agt5OFO.dpuf