What type of voice tone is used in Catch-22?

Sarcastic, sardonic, satirical, and darkly humorous are
just some of the words that describe the tone of Joseph Heller's anti-war classic,
Catch-22. Heller tells his World War II tale in an atypical
fashion. The protagonist, Yossarian, is an anti-hero whose bravery can be questioned at
every turn. Of course, it is the absurd notions and actions of his superiors and the
other men around him which cause Yossarian to doubt the reasoning behind their
decisions, and which put his life unnecessarily in jeopardy on a daily basis. Although
Yossarian is believed to be insane, in reality, he is about the only sane character in
the novel. Heller shoots down the traditional views of heroism and the necessity of war,
turning their real goals into materialistic objectives and financial profiteering. There
is little common sense in Heller's nonsensical world, where the will to survive is
considered madness, and where madness is considered the norm.