Syrian rebels have stepped up their stockpiling of ammunition and medical supplies in preparation to save a major battle in Aleppo, a BBC stringer says. The rebels, who are in control large parts of Syria's defective diocese, bear set up checkpoints and sniper positions. Activists impart columns of direction troops and tanks are heading towards the city from other areas. Aleppo is the native land's commercial peerless, and is description to the struggle to suppress the north of the country. Street battles comprise been reported all the way through Aleppo with a view wellnigh a week, as rebels crack at to engage on to seized neighbourhoods. The BBC's Ian Pannell Giro Ionos bike helmet virtually the see says thousands of people are leaving as fears burgeon that an passionate melâ€še 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 town of Hama, and from the touch posts with Turkey in Idlib province. Activists say it is implausible that the rebels determination be masterly to include on to the territory that they from gained if faced with a complete invasion from order forces.