The Tell Abyad offensive or Martyr Rubar Qamışlo operation was a military operation that began in late May 2015 in the northern Ar-Raqqah Governorate, during the Syrian Civil War, conducted by Kurdish People's Protection Units (YPG) and the Free Syrian Army (FSA) against the Islamic State of Iraq and the Levant. The offensive took place from the end of May until July 2015. The campaign was largely the second phase of the Kurdish Operation Commander Rûbar Qamishlo, which began with a major offensive to retake the western Al-Hasakah Governorate, and involved the merger of the Kobanî offensive with the former. The focus of the campaign was to capture the key border town of Tell Abyad, and to link the Kobanî and Jazira Cantons in Northern Syria.