Nigeria's military says 200 girls and 93 women rescued from a Boko Haram stronghold are not those abducted from a school in Chibok in April 2014.
However, the major operations did result in the seizure of four camps from the Islamist militant group in the Sambisa Forest.
15 000 people are thought to have died in Boko Haram's insurgency and military campaigns against it since 2012.
The kidnap of the schoolgirls taken from Chibok led to global campaigns for their return, but none of them has yet been found.
Richard Dowden of the Royal African Society says this latest operation by Nigerian forces is significant.
IN: "I think...
OUT: ...to operate."
DUR: 27 sec
ALT:
Richard Dowden of the Royal African Society says this latest operation by Nigerian forces may be a sign that momentum is building in the fight against Boko Haram.
IN: "The army...
OUT: ...do anything."
DUR: 32 sec