Oshoneighbo was a major city and the manufacturing center of war-time Zebrica. Details in the original novel regarding the city are vague, but explicitly state there were several munitions factories and a large amount of civilian housing.
The Battle of OshoneighboEdit
It was the site of a horrific battle between Equestrian and Zebra forces, the scope of which and damage caused by are referenced by several historical records. Rainbow Dash, Soarin', Fleetfoot and Spitfire all cite the battle in separate memory obelisks. Though the siege crippled the Zebrican war effort, seeing what devastation the Equestrians were capable of inflicting steeled international opinion (and some internal opinions) against Equestria. Thus, it was both a victory and a loss.