Josef Švejk is the main character in the satirical novel "The Good Soldier Švejk," written by Czech author Jaroslav Hašek. Set during World War I, the story follows Švejk, a seemingly simple-minded but clever man, as he navigates the absurdities of military life and bureaucracy. His humorous antics and interactions with various characters highlight the absurdity of war and authority. The novel, published in parts between 1921 and 1923, is considered a classic of Czech literature and has been translated into many languages. Švejk embodies the spirit of the common man, using wit and humor to cope with the challenges of a chaotic world.