The International Coalition against ISIS has opened the doors for fighters to join its ranks on the Syrian-Iraqi-Jordanian borders. This comes as tension increases in Syria’s eastern Euphrates amid news that coalition forces have been conducting military maneuvers at the Tanf base, with the participation of Syrian opposition fighters. According to opposition media sources, several types of rockets, rocket launchers, artillery and mortars were used in the maneuvers in preparation for possible confrontations with ISIS in the Syrian desert. The US-led coalitions Tanf base has started receiving new members in its ranks to train them in their camps in Jordan, the sources told Asharq Al-Awsat. Euphrates Post website quoted sources as saying that the anti-ISIS coalition has opened this door in an attempt to bolster its military capabilities in the desert. The Revolutionary Commando Army, for its part, published pictures on its official Twitter account on Friday, showing it was conducting successful exercises alongside coalition forces. It said no one was hurt during the exercises that aimed at enhancing its members’ skills to defeat ISIS and ensuring they do not return to Tanf’s borders. The Tanf base is located in the vicinity of Tanf crossing the border with Jordan and Iraq in the heart of al-Hammad desert southeast Homs province, about 240 km from the city of Palmyra and not far from the borders with Jordan. In other news, local sources in Deir al-Zor said US military reinforcements and logistics arrived last week to al-Omar oil field on the eastern bank of the Euphrates River (10 km from al-Mayadin city) in Deir al-Zor province. “Military equipment consisting of rubber boats and river crossings have reached al-Omar oil field base through US-coalition’s aircraft and helicopters,” according to the Euphrates Post. It said developed surveillance cameras were also installed in the vicinity of the base.