Three military officers who were participating in the Democracy Day Parade, on Monday, slumped at the Eagle Square, Abuja, Punch reports.
It was gathered that the soldiers slumped due to exhaustion, having stood for hours on one spot under the scorching sun.
Punch further reports that some security and medical personnel rushed to the parade ground with stretchers and whisked the collapsed colleagues to the medical shed on the left side of the State Box where the President, Muhammadu Buhari was seated.
However, no casualties were recorded as they were successfully treated and soon regained consciousness.
The ceremony featured performances by the Army, Navy, Air Force and the Police.
The Nigerian Army Female Corps also performed a combat display followed by traditional dance performance from various ethnic groups.
The President, who was the Special Guest of Honour, inspected the guards, and was followed by a military/police march past in slow and quick time.