On Tuesday morning, more than 2,000 Sainiks gathered on the ground to guard the makeshift memorial, which has been built without permission and which the civic body has asked the party to remove.
Of the total supporters, more than 1000 were women, who sat singing prayers at the samadhi.
Shiv Sainiks, too, said they would disturb the Army event.
“The Army can do whatever it wishes on the rest of the ground, but we won’t allow them to touch the samadhi,” said Deepak Jadhav, a party worker from Virar.
Narendra Vispute, the defence spokesperson in Mumbai, dismissed reports in a section of the vernacular media that the Army would interfere with the Sena’s activity.
“Ideally, the Army would have liked to have the entire area for its stalls, but if political activists don’t want vacate the land, the Army will not interfere,” Vispute said.
The annual fair sees thousands of visitors every year.
Army sources said a separate enclosure would be made to ensure that the political activists don’t disrupt the event.