Cultural event co-ordinator Jack Thatcher said more than 600 warriors took part in the powhiri (welcome).
Local iwi leaders Awanui Black and Reweti Te Mete wrote the haka pohiri.
Mr Thatcher said Tainui and Mataatua iwi were invited to take part in the powhiri as Tauranga iwi had performed at commemorations in their areas.
Twenty-four of the elite group involved in the wero (challenge) carried tupara (double-barrelled shotguns).
"It all came together, we've been planning this for a few months and it worked exactly how we planned it."
He estimated a crowd of about 3000 people watched the ceremony.
After the haka, the official powhiri speeches began which were followed by an address by Sir Jerry. He said the ceremonies had brought poignancy to the events of 150 years ago.
"It is a great privilege to take part in today's events ...
"The enduring image of the Battle of Gate Pa is that of the Maori warriors who risked their life to take water to an adversary who was mortally wounded. That showed the compassion of Maori warriors to British wounded and dying."
What does the Battle of Gate Pa and the 150th commemorations mean for you? Email your responses to editor@bayofplentytimes.co.nz with your name and suburb.