"Burning for Revenge (The Tomorrow Series #5)" by John Marsden
https://www.amazon.com/gp/product/0439858038/

Book number five of a seven book young adult action adventure fiction
series. I read the well printed and well bound trade paperback
published by Scholastic Paperbacks in 2006 that I bought on Amazon. The
first book in the series was actually published in 1993, this book was
first published in 1997. Book #5 is out of print so I had to order a
used copy. I have also ordered books #6 and #7 from Big River. And of
course I found out that I could have bought the entire series in trade
paperback at a discount:
https://www.amazon.com/gp/product/B00IWWCXBC/

At the middle of their high school senior year in Australia, a group of
seven 17 and 18 year old teenagers decide to go camping in the bush for
a week before school restarts. They gather up their sleeping bags and
supplies and go way out into the bush, actually at the edge of the
desert in a place known as Hell. After a difficult trip by Land Rover
and a long walk, they camp next to a spring fed stream. When they
return to Ellie's farm after a week, her family is missing and the farm
dogs are dead on their chains. They find out that Australia has been
invaded by an Asian nation and that their families are being held
captive at the town fairgrounds. The Asian forces have taken the
airports first and then the cargo shipping seaports. The justification
of the invasion is that the Asian nation needs the extensive natural
resources of Australia.

The enemy has built a huge airbase in the region where Elli and her
friends are at. Their homes, where the New Zealanders brought them back
to Australia. There are over one hundred aircraft at the new airbase,
mostly jet fighters. The jet fighters are intercepting the New
Zealander bombers so the New Zealanders desperately want the airbase
blown up. But the hundreds of enemy soldiers protecting the airbase are
a great deterrent for the Kiwi commando team that came back with Ellie
and her friends.

The first book in the series was made into a film of the same name in 2010.
https://en.wikipedia.org/wiki/Tomorrow,_When_the_War_Began_(film)

My rating: 4.5 out of 5 stars
Amazon rating: 4.7 out of 5 stars (107 reviews)

Lynn