Al-Tanf offensive (2016)

The Al-Tanf offensive was a two-day offensive launched by the Free Syrian Army backed by the U.S.-led Coalition against the Islamic State of Iraq and the Levant, aiming to recapture al-Tanf, Syria. Al-Tanf had been captured by ISIL from the Syrian Government in May 2015 and had been used by ISIL to shift militants and resources across the border.
On 3 March 2016, Syrian rebels took the offensive to capture al-Tanf, and after several hours of fighting captured the border post.
ISIL counter-attacked several hours later, and recapturing the post. The fighting continued until the next day, in which the rebels repelled ISIL fighters and recaptured the post.