Normally anti-government newspapers today joined in condemning proposed international snactions against South Africa.

Commenting on President Carter's pledge of support for an arms embargo and moves at the United Nations to introduce further sanctions against this country, the Sunday Times denounced "Washington's reckless meddling." Another English-language paper, the Sunday Express, came out against "extravagant foreign belligerence.

The comments followed yesterday's attack on the U.S. position by Colin Eglin, leader of the relatively liberal Progressive Federal Party.

"Without facing up to the realities of the situation in South Africa." Eglin said, "without giving mature consideration to the options for change, the Carter administration rushed in where angels would have feared to tread."

Meanwhile, military officials in Pretoria reported that 61 black nationalist guerrillas and five white South African soldiers were killed in a 26-hour battle across the border between Angola and Namibia (Southern Africa).

It was the heaviest fighting in the 10-year-old war over the disputed territory.

Officials said the battle started Thursday when a patrol clashed with about 30 guerrillas of the Southwest Africa People's Organization just inside the Namibian border. They said the patrol fought back and forth across the border and reached the guerrillas' and "most northern base" in Angola before withdrawing yesterday.

Black unrest continued in South Africa over the weekend despite the government's crackdown on protests. Police shot and wounded a black man during a stone-throwing melee in New Brighton near Port Elizabeth, a police spokesman said.