”O God we thank thee” was sung in the churches of France and Sweden after military victories in the seventeenth century. To celebrate Thanksgiving was a way of thanking God, but also a way for the rulers to legitimize the ever ongoing wars. For the inhabitants it was both an occasion for festivity and a way of getting information about what happened in the battlefield. Yet the image given was selective. Bloody defeats and uneventful everyday life was replaced by spectacular victories and royal glory. Even though the rituals in the two countries were similar in some ways, there were also substantial differences. The propaganda formulated a narrative about what war actually was, and what role the rulers and their subjects should play. In the crisis of 1709 this narrative was profoundly challenged. The book investigates how war events were communicated to the inhabitants of France and Sweden in the seventeenth century by the Church, and especially through days of thanksgiving (called Te Deum in France).