By Mariam Karouny
BEIRUT, July 27 (Reuters) - Rebels have detained scores of Syrian officers, soldiers and pro-government militiamen this week in Idlib province and in the city of Aleppo, where a major battle is anticipated, the opposition Syrian Observatory for Human Rights said on Friday.
A video posted on YouTube showed rebels with Kalashnikovs in Aleppo from "The Tawheed (monotheism) Brigade" guarding the detainees who were lined up in four groups on a school playground. An off-camera voice said they had been detained in Aleppo, Syria's biggest city.
Some of the detainees' faces were covered with bruises and showed signs of swelling around their eyes and when they spoke their voices quavered.
One said he was a colonel, another a major and several identified themselves as shabbiha, a term used by opposition to describe militiamen who are loyal to President Bashar al-Assad and are fighting alongside his troops.
At the end of the video, a rebel voice said: "The Free Army will terminate all the shabbiha, God willing."
A rebel from the group told Reuters that the detainees were safe and have been moved to an unidentified site in the countryside around Aleppo, which is a rebel stronghold.
"Some were detained in the Shaar police station and others have surrendered," he said.
"They are still alive, they will stay with us until the regime is toppled and then they will be put before a trial, each one will get what he deserves."
Assad has been struggling to crush a 16-month-long uprising against his rule which started with peaceful demonstrations but has become a militarised revolt. At least 18,000 people have been killed in the unrest across the country.
In Idlib province, rebels and government security forces clashed for at least eight hours after which the rebels detained 50 soldiers and overtook a major security building in the town of Maarat al-Numan.
A video on Youtube showed scores of rebels with guns inside a historic building that was used as a security base after they seized it from Assad's forces. The body of one soldier was lying on the floor of an office and a voice audible on the video said: "Let's pee on him, he refused to defect."
Writing on one of the walls said "Men of death" and the windows were blocked with sandbags.
Nearby buildings were destroyed and the road was covered with rubble in a sign of a fierce battle having been waged. (Editing by Michael Roddy)