The princes of Issachar were with Deborah; As was Issachar, so was Barak; Into the valley they rushed forth at his feet. By the watercourses of Reuben There were great resolves of heart.
It is rather strange that Judah and Simeon are not mentioned at all, either as participants, or as ones who stayed at home.  It has been supposed that they themselves were busy in a war against the Philistines and that they were therefore not able to participate.