Rebels were locked in their second day of fighting today with units from the Syrian Democratic Forces around the village of Ain Daqna.
"The fighting (on Monday) killed 11 fighters from Syrian rebel factions and wounded four SDF fighters," according to the Syrian Observatory for Human Rights.
Ain Daqna, in Aleppo province, has been held by the US- backed SDF since February.
It lies in a contested sliver of land between the alliance and Turkish-backed rebels.
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"We promise our people more flash attacks... We will make them (SDF) regret occupying this land and displacing thousands," the statement said.
Syria's conflict erupted in March 2011 with anti- government protests, but it has since evolved into a complex civil war drawing in regional powers.
Turkey has backed rebels in Syria's north to take on both the Islamic State group as well as the Kurdish People's Protection Units (YPG), which make up the bulk of the SDF.
Rights groups including Amnesty International have accused the YPG of razing villages and displacing residents in northern Syria, which the militia has denied.