The Russian “Hokum-B” helicopters provide close support to the Syrian Army.
Although some of Russia’s combat planes have left Syria to return home, part of the tactical aviation has been replaced with newly arrived Ka-52 and Mi-28N helicopters.
The role of these combat choppers is to provide close air support to Syrian forces, to protect the Russian Task Force deployed to Hmeymim airbase, near Latakia, as well as to conduct CSAR (Combat Search And Rescue) missions as the one launched to rescue the two pilots who ejected from the Su-24 Fencer shot down by a Turkish Air Force F-16 in November 2015 (during which, a Mi-8AMTSh Hip helicopter was hit by ground fire and later destroyed).
The first video showing Ka-52s at work at Syria has emerged on Apr. 3.
It allegedly shows the Russian combat helicopters supporting the Syrian forces in the outskirts of Homs.
H/T Babak Taghvaee for finding the video