These weren’t Syrian fighters in a war.
Did the prisoners consider themselves freedom fighters?
The idea that any man involved in fighting in Syria is a terrorist is ridiculous.
These were terrorists on a likely suicide mission. (Supposedly)
Answer the other question. When have jihadists worked for money?
No, but they are both ISIS fighters.
The Islamic State (IS),[b] also known as the Islamic State of Iraq and the Levant (ISIL), the Islamic State of Iraq and Syria (ISIS) and by its Arabic acronym Daesh, is a transnational Salafi jihadist group and a former unrecognised quasi-state. Its origins were in the Jai'sh al-Taifa al-Mansurah organization founded by Abu Omar al-Baghdadi in 2004, which fought alongside al-Qaeda during the Iraqi insurgency. The group gained global prominence in 2014, when its militants successfully captured large territories in northwestern Iraq and eastern Syria, taking advantage of the ongoing Syrian civil war. By the end of 2015, it ruled an area with an estimated population of twelve million people, where it enforced its extremist interpretation of Islamic law, managed an annual budget exceeding US$1 billion, and commanded more than 30,000 fighters
ISIS fighters were paid by the islamic state.
Islamic State to halve fighters' salaries as cost of waging terror starts to bite - Jan 19, 2016
https://www.theguardian.com/world/2016/jan/20/islamic-state-to-halve-fighters-salaries-as-cost-of-waging-terror-starts-to-bite