I saw this in outskirt of Juba. I couldn't understand how to play.
But in the other African countries like Kenya, Uganda & Ethiopia, I saw similar ones.
This year, Japan will send 300 Engineering troops to UNMISS(PKO mission in South Sudan).
So far around 60? people and other management staff already arrived in Juba.
A few days ago, I met them by chance and one of them kindly offered "Military Japanese Food".