The UGI-Golan Commonwealth War was a war fought between the UGI and the Golan Commonwealth. It is the only war the UGI has fought and the direct result was a stalemate.
The UGI and the Golans were negotiating for a possible alliance but the UGI unaware of their customs unaware they insulted the Golans, to the point of war. Many believed the Golans customs were eccentric but they had a right to be. The UGI Ambassador wasn't aware that in the precence of a Golan they must wear gloves as to the Golans believe the hand is the cause of disease after a the Golan plague started by a small child bringing in a poisonous flower to his mother, and thus the plague began.