Who is the beowulf described here? is it the same beowulf the story is named for?

What distinguishes the dialogue of this excerpt most clearly as a work of the postmodern era?

Read this excerpt from tim o’brien‘s “ambush” “i had already pulled the pin on a grenade. i had come to a crouch” which literary device is most clearly shown in this excerpt?

If the author's last name is mentioned in the sentence, it does not need to be included in the in-text citation.