The United States is shipping arms to Iraq to help its army fight a Sunni Islamist insurgency in Anbar province. But some Iraqi soldiers argue that basic planning and supplies are just as sorely needed.

Lt. Col. Ihab Hashem, a deputy army commander based at the 8th Division headquarters in this southern city, recounted a series of what he said were poorly planned and executed missions in Anbar. There, the government is struggling to oust militants from the Islamic State of Iraq and Syria, or ISIS, an al-Qaeda splinter group that has proved a formidable foe.