Hundreds of militants have been killed during the struggle to recapture the Nigerian garrison town of Monguno, according to officials.
"Over 300 terrorists were killed while a few were also captured," said defence spokesman Major-General Chris Olukolade.
The claims follow similar statements from Niger, Chad and Cameroon - who are also involved in fighting the terror group - but they have not been independently confirmed.
The army has often claimed success against the group which has then been contradicted by witness reports.
Civilian vigilantes in the town confirmed it had been retaken and said there had been heavy casualties, but did not specify how many people had died.
A large stockpile of arms, equipment and ammunition was also said to have been destroyed.
Monguno has been in the hands of Boko Haram since 25 January,
There are fears the group is looking to use the town as a springboard for a raid on Borno's state capital, Maiduguri, 80 miles away.
Defence spokesman Mr Olukolade said "massive" casualties had followed a two-day operation to regain Monguno and 10 other communities.
Armoured vehicles, 300 motorbikes, an anti-aircraft gun, eight different types of machine gun, rocket-propelled grenades and ammunition were among the equipment seized, said the spokesman.
He added that two Nigerian soldiers had been killed and 10 others injured during the fighting.
"The cordon and search operation is continuing along with aggressive patrols by troops who are now dominating the cleared communities," the statement said.
Boko Haram's campaign of violence has killed thousands of people since it launched its push for a separate Islamic state in mid-2009.
The US is providing equipment and intelligence to Nigeria and its neighbours, who are increasingly cooperating in the fight against the group.