At the frontline in Aleppo city, the young fighters are mainly from the countryside of the province.

It has not been easy to stand up against the Syrian army, especially when the city did not rise up when rebels stormed some poor neighbourhoods and set up bases.

While the majority of the fighters in Aleppo are Syrians, the war has however attracted Arabs who feel obliged to help the opposition who are mainly Sunni Muslims.

Al Jazeera's Zeina Khodr reports from Aleppo city.