It heavily depends on Your personal definition of "art", but any known warlike culture has been (or "is") fond of music, songs (mostly ballades) and dance.
Many of them also delight in poetry, sculpture, painting etc.
... although all these tend to be vastly mono-thematic ;)
NOTE: You seem to be deceived by a single (apparent) counter-example: Spartans. They did not leave behind any major artifact, but:
- this doesn't mean they did not have their art forms (e.g.: singing and dancing)
- this was not due to their warlike culture, but to their refuse of any indulgence to the "pleasures of life" (think: what major artifact do we have from medieval hermits? They surely weren't warriors, but left more-or-less the same kind of remains as Spartans)