Abdul Baset al-Sarout, 27, who rose to fame as a goalkeeper for his home city of Homs, joined peaceful protests against Assad in 2011 and was known as the “singer of the revolution”. He later took up arms as the country slid into civil war. Four of his brothers and his father have also been killed in the fighting.

Sarout’s life and his role in Syria’s uprising and conflict was the subject of Return to Homs, a documentary film that won an award at the 2014 Sundance film festival.