In 1687 and 1689 he took part in two unsuccessful Crimean campaigns. Peter the Great became a frequent guest in Le Fort's house from 1690. Le Fort was one of the principal organizers and participators in Peter's military games, which would pave the way for his career advancement. In 1690 Le Fort was promoted to the rank of major general. He then became lieutenant general (1691) and general (1693). In 1692 Peter I funded the construction of a large reception hall for 1,500 people, which formed an extension to Le Fort's house. This hall hosted administrative meetings and Peter's parties. Le Fort's partying soon became infamous, with noble guests such as Peter I of Russia in usual attendance. They together would form one of the first mock religions, The All-Joking, All-Drunken Synod of Fools and Jesters, which earned notable criticism from both the Russian Orthodox Church, as well as the Roman Catholic Church for its routine mockery of their proceedings.