Board Thread:Theories & Speculation/@comment-1512913-20141028151348/@comment-945885-20141104013732

Just because we never saw them use it doesn't mean they never trained in them. Hell, during the war we saw huge groups of shinobi learning a basic Earth Release jutsu just to help form that one barrier. What this means is that they had some elemental attacks in their repertoire, but rarely used them, or never had reason to use them while on camera. We already knew that the typical jonin was trained in at least three chakra natures, so I don't know why this would cause annoyance.