The most common and most likely answer to this crossword clue is the 3 plus 3 plus 5 letter word WAR AND PEACE
W
A
R
A
N
D
P
E
A
C
E
More clues leading to the result WAR AND PEACE
Buddy explains!
The straight part
We know that "literary work" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case literary work = war and peace.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.