What is the time period and how does it affect the literary style?

The novel Grendel by John Gardner was published in 1971. This was during the Vietnam War. This was a coming of age time for the youth of America. Many people opposed the war in Vietnam. This is the time period that a generation was forming its beliefs and political philosophy. The author incorporates this into his book. Grendel is an example of the American youth during the late sixties, early seventies. He is dependent on his mother and then begins to venture out. He goes into the human world and does not like the violence he sees and thinks it is wasteful. This directly correlates to the reaction to the Vietnam war. He later forms his beliefs and thinking on the issue of the humans, and begins to rebel against it violently, just like the Vietnam protesters. He includes these themes into his novel. The troops were eventually withdrawn in 1973.