KABUL — Afghan government forces lost more than 200 officers and soldiers in fighting over the past three days, as Taliban insurgents launched sustained attacks on four fronts.

The hardest-hit area was the southeastern city of Ghazni, where more than 100 police officers and soldiers had been killed by Sunday, a hospital official said, and the insurgents appeared to be in control of most of the strategic city aside from a few important government facilities.

Ninety miles west in Ghazni province, the Taliban seized control of the Ajristan district. The elite army commando unit that had been defending the district disappeared for two days and their superiors were uncertain of their fate.

When they found out Sunday, estimates of the dead ranged from 40 to 100. Twenty-two survivors were carried to safety on donkeys by rescuers who found them lost in the mountains.

In Faryab province, 250 miles to the northwest, an isolated Afghan National Army base of 100 soldiers lost more than half of its men in a Taliban assault that ended Sunday. The defenders said they did not expect to last another night.

And 275 miles east of the Faryab base, in northern Baghlan province, at a base at Jangal Bagh on the strategic highway between Pul-e-Kumri and Kunduz, insurgents killed seven police officers and nine soldiers and captured three other soldiers Saturday.

With the tempo of the Afghan conflict steadily increasing, it was a bad few days for the Afghan government.

The fighting demonstrated that the insurgents had a capacity for carrying out ambitious operations on multiple fronts, while the government struggled to respond on a single front in Ghazni.

Baz Mohammad Hemat, director of the Ghazni Hospital, said by telephone that 113 bodies had been taken to the hospital, along with 142 people who had been wounded, most of them in uniform.

“We’re running out of hospital rooms; we are using corridors and available space everywhere,’’ Hemat said. “Fighting is quite close to the hospital. The situation is really bad here. We’re receiving more and more wounded and dead every hour.’’

The death toll appeared sure to rise, with numerous reports of bodies left unrecovered around the city.

The fall of Ghazni, if it happens, would be the Taliban’s most important victory yet, as the city is on the main north-south highway, and its capture would effectively cut off the capital, Kabul, and the north from the insurgents’ Pashtun homeland in the south.

“Heavy fighting is ongoing around the governor’s office, the police headquarters, and the compound of the intelligence agency,’’ said Nasir Ahmad Faqiri, a member of the provincial council.

“The forces in Ghazni have resisted well, but naturally they have fought so long,’’ he said. “The reinforcements have not done anything effective. All they have done is establish a base for themselves.’’

The Afghan Minister of Public Health, Ferozuddin Feroz, said he had asked the International Committee of the Red Cross for “urgent help’’ in transporting the wounded and dead out of Ghazni.

Colonel Farid Ahmad Mashal, Ghazni’s police chief, said by telephone that reinforcements, including US troops, were beginning to clear the Taliban from the city. He said more than 1,000 insurgents had attacked Ghazni, and that 500 had been killed.

“They dreamed of repeating the fall of Kunduz here, and we sent them to their graves with those dreams,’’ Mashal said, referring to the northern city overrun briefly by the Taliban in 2015 and 2016.

The government in Kabul and the army continued to insist that they were in full control of Ghazni.

“The strategic locations in Ghazni city are in the control of government forces,’’ General Mohammad Sharif Yaftali, chief of staff of the Afghan National Army, or ANA, said at a news conference. “The governor’s office, prison, police headquarters, and ANA bases are under government control. The Taliban are settled in houses and shops of people inside the city.’’

Video posted on social media sites, however, showed insurgents strolling casually around the city. Numerous local residents confirmed that militants were commandeering homes to use as bases.

A spokesman for the US military, Lieutenant Colonel Martin L. O’Donnell, said that 10 US airstrikes had been carried out Sunday, five Saturday, and one Friday.

He described Ghazni as relatively quiet. “What we are seeing as the clearing operations continue is the Taliban attempting to harass Afghan forces and using civilians, who they show little regard toward, as cover.’’

O’Donnell confirmed that some US troops were in Ghazni. “US advisers are assisting the Afghan forces, who are leading the clearing operation,’’ he said.

Taliban insurgents said they had amassed forces from several provinces for the attack on Ghazni. It was the fourth time they have tried to capture a provincial capital, most recently in May, when they attacked Farah in western Afghanistan.

Despite the large number of insurgents fighting in Ghazni city, the Taliban also mounted deadly attacks in three other parts of the country from Friday through Sunday.

In Ajristan, a district in the rugged western part of Ghazni province about 90 miles from the city, an entire Afghan National Army commando unit disappeared for two days after the Taliban drove two bomb-laden vehicles into their base Friday.

The vehicle bombs set off powerful explosions that destroyed the base and killed an unknown number of soldiers and police officers there, according to a senior Afghan security official.