What are the different types of war poetry?

There are three types:
-Patriotic poetry 
-Anti-war poetry
-Witness poetry

Patriotic poetry usually honors soldiers who fight in defense of their countrymen and to bring peace.
Anti-war poetry depicts war as a source of misery and shows futility of soldier's deaths and sacrifices they make.
Witness poetry is written by those, who were not fighting, but nevertheless experience war first hand. It is usually written by civilians.