MOSCOW (AFP) - Russia's air force hit 86 "terrorist" targets in Syria in the past 24 hours, the defence ministry said Tuesday (Oct 13), in the highest one-day tally since it launched its bombing campaign on Sept 30.

"In the last 24 hours, Su-34, Su-24M and Su-25SM planes carried out 88 sorties against 86 terrorist infrastructure targets in the provinces of Raqa, Hama, Idlib, Latakia and Aleppo," the defence ministry said in a statement.

The ministry said the strikes destroyed a command post outside the town of Anadan, located 16km north-west of Aleppo, which it said was used by Islamic State in Iraq and Syria (ISIS) fighters to coordinate their movements in the area.

Other strikes in the ISIS stronghold of Al-Bab, located in the Aleppo region, saw the destruction of a field command centre and an ammunition depot.

The Russian air force said it had attacked a convoy transporting fuel and ammunition in the Aleppo region.

Strikes outside the village of Latamneh in Hama province destroyed an underground ammunition bunker, the defence ministry said.

The Russian military has claimed fighters are low on ammunition, fuel and materials, and that they had begun abandoning their combat positions.

"According to radio intercepts of talks between field commanders in the provinces of Hama and Homs, the fighters are experiencing an acute shortage of ammunition for small arms and grenade launchers," the ministry said.

"Some field commanders have informed their superiors that if they don't receive ammunition in the near future, they will lead their gangs away from the combat zone."