The first historian to portray the campaign and Charles X Gustav's actions was the historical writer Samuel von Pufendorf in his work "De rebus a Carolo Gustavo gestis" (), commissioned by Charles X Gustav, and completed for publication in 1696. Pufendorf used various sources to describe the course of events, including reports from Hugu Terlon and Philip Meadow and notes written by Swedish secretary Edvard Ehrenstéen. According to these, it was Charles X Gustav who was the driving force and who made the final decisions in the campaign, sometimes contrary to the warnings of his advisers. According to Pufendorf, Charles X Gustav was the lone hero, and the Treaty of Roskilde was his achievement only. The depiction of the circumstances of the decision-making process both in Frederiksodde and on Funen became complicated as Erik Dahlbergh's autobiography and excerpts from his diary were published in 1757 and 1785, respectively. In both works, Dahlbergh highlighted his own role in the king's decision to cross the Great Belt: it was his ice investigations, including the fact that he presented the report on the ice conditions to the king, that spurred the king's decision process. In the resulting deliberations in Nyborg, it was Dahlbergh who persuaded the king to venture out on the ice, while Wrangel and Corfitz Ulfeldt advised otherwise. In 1786, Carl Gustaf Nordin wrote a biography of Erik Dahlbergh, stating that "in Dahlbergh's words, the march across the Belts took place; and without it, Sweden would have been a few provinces smaller, and the world would have one less heroic act to admire".