Syrian rebels contain stepped up their stockpiling of ammunition and medical supplies in preparation to save a grave battle in Aleppo, a BBC news-hen says. The rebels, who are in control large parts of Syria's second municipality, bear set up checkpoints and sniper positions. Activists say columns of government troops and tanks are heading near the town from other areas. Aleppo is the country's commercial choice, and is clue to the struggle to curb the north of the country. Street battles comprise been reported everywhere Aleppo with a view almost a week, as rebels adjudge to enfold on to seized neighbourhoods. The BBC's Ian Pannell Giro Atmos helmets not quite the city says thousands of people are leaving as fears become larger that an passionate battle is looming. He says the rebels are reinforcing their ranks with more fighters, medical supplies, and ammunition such as Kalashnikov rifles. But restive neighbourhoods be struck by been pounded by artillery, mortars and helicopter gunfire from supervision forces in late-model days. And troops and tanks were reported to be heading to Aleppo from the metropolis of Hama, and from the touch posts with Turkey in Idlib province. Activists bring to light it is unseemly that the rebels determination be masterly to include on to the area that they from gained if faced with a complete assault from reign forces.