The Syrian Armed Forces have discovered a large cache of military arsenal from Western countries, particularly from the United States, left behind by the Islamic State group as its forces fled the city of al-Mayadin in the east of the country, according to Sputnik.

“We have encountered a huge arsenal of advanced U.S., British and Belgian weaponry,” said Hasan Suhel, the Syrian general who led the military operation to liberate al-Mayadin.

The arsenal included rifles, anti-tank weaponry, projectiles, artillery, armored vehicles, tanks, satellite communication systems, radars, medical equipment and a garage with several functional drones. Syrian forces also found a 115 mm howitzer manufactured in the U.K., according to Sexenio, with a large portion of the armament constituting weapons and weapon systems used by NATO.