"Virgilian studies in England were raised to a new plane with the publication of R.G. Austin's commentary on Aeneid II (1964). His Aeneid IV (1955) had given a slightly meagre foretaste of the riches to be revealed in the editions of Aeneid II, I (1971), and VI. (Source: Library Thing)
Written in the epic form attributed to Homer. The epic form requires that the poet begin with a statement of the subject, so Virgil tells us that the subject will about the wanderings of Aeneas.