Captain Leo Fransen, aged 75, has been identified as the volunteer firefighter who passed away late in the afternoon of Thursday 16 November fighting the ongoing Hudson Bushfire north of Walgett.

Captain Fransen, remembered as being "very involved in all aspects of community" and a "committed life member" of the Rural Fire Service (RFS) was struck by a falling tree on the first of a three day deployment fighting fires.

Fransen among others had travelled from the Diamond Beach in the Mid-North Coast to help in the firefighting efforts just a day earlier.

In a statement the Rural Fire Service say that RFS members rendered first aid until ambulance crews arrived.

He was then transported to a Lightning Ridge medical facility where he passed away.

Rural Fire Service Commissioner Rob Rogers expressed his condolences for Captain Fransen's wife and two children, along with his extended family and all those who knew him.

"These things are incredibly difficult for everyone involved," said Commissioner Rogers.

"Our thoughts are with his wife Margaret, children Julie and Paul, and all his extended family."

"He was extremely active in the local community, I understand he moved up there from the hunter region in around 2010, made a life there and had been very involved in all aspects of the community"

NSW Minister for Emergency Services Jihad Dib offered condolences and reflected on the type of person Leo was.

"We send our deepest condolences, sympathies, our heart and our love," said Minister Dib.

"It speaks to the type of person he was, to travel from Diamond Beach to Lighting Ridge, that nature within the volunteers."

"It's a difficult days and a timely reminder of the danger that our heroic firefighters who are volunteers put themselves in."

The Hudson Bush Fire has to date burnt more than 21,300 hectares since it started on Sunday 12 November.

It was believed to have started via a lightning strike, and has destroyed six buildings in the Glengarry opal mining community.

RFS Commissioner Rogers says there is "still more work to do to bring it under control."

"We're hoping that in the next couple of days we'll have it contained, and no more structural losses," he said.

The grass fire on Goodooga Road North of the Hunter fire has been labelled as "under control" by the RFS after burning almost 5000 hectares to date.