evidence: Amid South Sudanese President Salva Kiir's announcement of military withdrawal from Heglig, a border town in the disputed oil-producing region of Abyei, about 100 soldiers lay around the shaded grounds of a military hospital, nursing injuries sustained on the frontlines. [...] Sudan controlled Heglig until South Sudanese forces seized the territory about two weeks ago. Oil fields in Heglig produced about half of Sudan's total oil output, and the South says northern forces were using the area to launch attack on southern territory, including here in Unity State. [...] It appears battle may not be over yet. The SPLA has previously withdrawn from Heglig only to retake control of the town a few days later.