article_snippet: a senior army officer on the ground said the forces involved in the battle were from the army, police, counter-terrorism units, a government-controlled volunteer group known as the Popular Mobilisation units and local Sunni tribes opposed to IS. '
article_snippet: Military sources said Iraqi warplanes were involved
article_snippet: but it was not immediately clear whether foreign air support - Iranian or from the US-led coalition
article_snippet: An army officer said the forces involved in the battle were from the army, police, counter-terrorism units, volunteer units and local tribes .