KOKJALI, Iraq (Reuters) - Iraqi military medics rushed a man whose mouth had been blown apart by mortar shrapnel into their temporary field clinic on the eastern edges of Mosul.

They bandaged the wound and gave him morphine as he gasped in pain, bleeding profusely onto a camp bed laid out in the courtyard of an abandoned home.

Seconds later, a boy with a large hole in his leg and one arm peppered with cuts from a shell blast was brought in on a stretcher. “That’s already more than 30 people wounded today,” a medic said. “And two dead.”

All the victims are from areas closer to the center of Mosul and which Iraqi forces recaptured from Islamic State two weeks ago - but which they have sometimes struggled to secure as civilians remain within the range of the jihadists’ mortar and sniper fire.

Black armored vehicles sped into the clinic run by the elite Counter Terrorism Service (CTS) throughout the morning, ferrying in the casualties - an elderly man shot through the knee, another with a leg wound, a girl hit in the chest.

U.S.-backed forces fighting to drive Islamic State out of Mosul, the militant group’s Iraqi stronghold, are facing stiff resistance from fighters using car bombs and human shields to slow their advance.

“Most casualties here are civilians,” medic Mohammed, 23, said at the clinic in the Kokjali area. “Islamic State shell randomly or target civilians with mortar and sniper fire. Most of the wounded are from mortars.”

A Reuters correspondent also saw a wounded soldier brought back from the front line a few kilometers (miles) to the west.

Mortar shells fired by Islamic State landed intermittently in the area while the medics from the CTS forces treated the wounded.

An injured man receives treatment by Iraqi special forces soldiers in Mosul, Iraq November 22, 2016. REUTERS/Thaier Al-Sudani

“Part of the problem is securing the areas the special forces have taken,” Mohammed said. “If bigger army units or the federal police came in to clear the areas behind where CTS have advanced, maybe fewer people would be getting hurt, and it would make our job easier.”

DOZENS WOUNDED EACH DAY

Military doctor Captain Nizar said his comrades treated between 50 and 200 wounded civilians every day. “We had 25 civilian deaths yesterday,” said Nizar, who did not give his full name.

Reuters could not independently verify casualty tolls, but in the space of two hours the correspondent saw one dead body and at least six other wounded including two serious cases.

The medics had put up a white flag with a red crescent close to the clinic. The building had been damaged by shellfire and was mostly empty apart from several camp beds used to treat patients.

A crude surgical table stood in the hallway, made of metal stands and a wooden board, surrounded by boxes of painkillers and wound dressings.

Captain Nizar said those who were more seriously wounded were taken to hospital, sometimes more than an hour’s drive away in Erbil, capital of the Iraqi Kurdish autonomous region. For some, it was clear to the medics that it would already be too late.

Earlier, Ahmed Hussein wept standing over the body of his 17-year-old son Ayman, who had been shot through the back just half an hour before in Mosul’s Zahra neighborhood.

Ayman, his eyes closed and mouth open, was wrapped in a blanket placed on a stretcher outside the clinic after medics had tried in vain to save his life.

“It was a sniper, I think,” 48-year-old Hussein said, his voice trembling. “The bullet went through next to his heart.”