Um.... not true. The Redstone rocket arrived from the US in peices and unmodified and was a part of an arsenal of 10 rockets donated for civil aerospace by the US Air force. Each rocket was heavily modified in accordance to the missions they were to be used for. They were modified for factors such as payload aerodynamics and weight, trajectory requirements, and expected heat.

The modifications were carried out by the Weapons Research Establishment (now a part of the Defence Science and Technology Organisation) in the Australian military at the Woomera testing facility with designs and testing from the University of Adelaide. These modifications were also made in conjuction with TRW Inc in a mostly supervisory role focussing double checking and materials testing (the now defunct aerospace manufacturer that helped with the US modifications of the Redstone rockets for their early satelites in the 50s-early 60s such as the mercury and jupiter missions).

The Redstone rocket was originally a ballistic missile for nukes and was developed by the US military with german rocket engineers. At this point in time the US rocket tech was mostly german tech. The redstone rockets were a itteratively improved from an original design that came out of Army Ballistic Missile Agency and was manufactured by Chrysler from 1952 to 1961.

So you are wrong. While it was a US designed rocket (like I said), it was modified for each civil space mission in accordance to the needs. A task that was done by the Australian aerospace industry in Australia...

EDIT: A source https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwip34eh_MD7AhVXBYgKHVk8BpIQFnoECFAQAQ&url=https%3A%2F%2Fwww.honeysucklecreek.net%2Fsupply%2FWRESAT%2FWRESAT_Images%2FWRESAT_booklet_Nov_1967.pdf&usg=AOvVaw1XPn5SDwlauNfZaDwr2xc-

Original Domain URL https://www.honeysucklecreek.net/

I litterally said that it was an australian modified US rocket with a an AU payload in the text above. But if that's the rules we are playing by. Then I know of a 3D printed rocket company currently in NZ that did 80% of their dev work here before they bailed for greener pastures..

Not australia's first rocket. Australia's first rocket was for the launch of the WRESAT in 1967. Since then there has been a private a military launches, and even a few from NASA. WRESAT was a joint effort between the US the UK, and Australia. At that time the seperate countries did a lot of seperate and joint development. The rocket was a demestically modified redstone rocket from the US. The launch was from the Woomera testing range and spaceport. I have had a lot of trouble with my googlefu due to their efforts to make the search engine a marketing platform. But I am pretty sure that the payload was actually demestically developped.

There have also been a lot of space development in Australia over the years. But same old issue with every hightech industry here. The conservatives get in, pull funding, neglect international obligations, run the economy into a tight position, and them blame the centrist (which they call the left) for the economic situation. It's the reason why Australia almost pulled out of the square km array... atleast until it was made clear to our gov't it would be paying for it one way or another. Most of our tallent get exported to more fertile ground. As a result of this toxic lack of support between gov'ts. So much so that when I was getting my BS I was told that if I actually want to earn money I should think about moving somewhere else in the world. It's better these days. But the conservative dirtbags are looming again.