MARIB, Yemen—In Yemen’s gas-rich region of Marib, fighters loyal to the Saudi-backed government recited Koranic verses before launching a hail of mortar and machine-gun fire toward rocky mountains in a desperate bid to push back Houthi forces.
The commanding officer peered through his binoculars at the dust and plumes of black smoke thrown up by the firing, aimed at a group of elusive enemy Houthi snipers.
