Nigerian Military says at least 160 children and women rescued from the Sambisa Forest, days after 293 others were freed.
One woman died and eight others were wounded as nine camps belonging to the Islamist insurgents were destroyed, army spokesman Col Sanu Usman said.
He told the BBC more than 100 men and boys were among more than 160 rescued in operations on Wednesday.
Earlier this week, the army said it had freed nearly 300 women and children.
The girls abducted from a school in Chibok in April 2014 were not among them.
Col Usman told the BBC Hausa service that those rescued were being screened to ascertain their mental health and are being kept in an undisclosed secure location.
The eight injured women were in a critical condition, the spokesman said.
In an earlier statement, he said one soldier and several Boko Haram field commanders and foot soldiers had been killed in the fighting and several armoured vehicles, some with anti-aircraft guns, had been destroyed.
In total 13 camps had been destroyed in Sambisa this week, the colonel said.
The Sambisa forest is said to be a huge area, surrounding a reserve of the same name.
It is not clear if those rescued were kidnapped or were taken hostage from villages taken over by the militants.
A local senator says the women and children are likely to have been residents of the north-eastern nature reserve.
“These are farming communities and most of those left behind in villages are the elderly ones, women and girls because the youth and the strong ones normally have to run or otherwise they will be conscripted into the Boko Haram insurgent group,” Ali Ndume told the BBC’s Focus on Africa radio programme.
He said the Sambisa forest reserve is vast so it was difficult to know how many people were still living in territory controlled by the Islamist militants.