In 1510–1512, Joannis Vislicensis taught Aristotle's philosophy, Euclid's mathematics and Cicero's rhetoric classes to students.
Kruczkiewich argues that otherwise Joannis would have added his academic title to his name with the poem, the way his teacher Pavel habitually did, since this would have been important for the promotion of the first book by a new poet.
Kruczkiewich, comparing the dates, also raises doubts that a successful master [Jan of Wislica II] would drop his occupation and start anew studies in literature with Pavel the Ruthenian.
[2] He began writing epigrams to his friends, he also wrote an ode to Konstanty Ostrogski who was a commander in the well-known Battle of Orsha in 1514.
The poem consists of 1,300 verses in hexameter divided into three parts, or three books, according to the terminology of that time: The only original copy of The Prussian War is kept in the Jagiellon Library in Kraków.