Story highlights Human Rights Watch demands an end to child soldiers in Syria's civil war

The monitoring group documents 194 deaths of "non-civilian" male children since 2011

The report demands the discharge of all soldiers under age 18

The report, citing logistical and security concerns, did not look into pro-government militias

(CNN) At the start of Syria's civil unrest, Omar would rally against the government alongside his schoolmates, later taking to the streets in his hometown of Salqin.

Two years later, at the age of 14, he became a child soldier, training to join the ranks of rebel group Jabhat al-Nusra. He learned how to use weapons, make bombs and use mines. But when it came to fighting on the front line, he was scared.

"Then our sheikh came to encourage us to go fight and gave us speeches about jihad," Omar told Human Rights Watch. "So after two days, I went to front line."

Omar is just one of many boys being used on the battlefield in Syria's civil war, according to an HRW report released Monday. Many are forced to fight in battle. Others must act as snipers, man checkpoints, spy on opposing forces or carry out other, equally dangerous tasks.

Amr, 17, told Human Rights Watch that he first joined the Daoud Brigade, an Islamist rebel group, when he was 15. He later agreed to sign up for a suicide attack mission, feeling socially pressured to sign the volunteer list. Other children had also signed on, he said.

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