Hi, I'm new here. I spent some time in the military, so I can offer my own memories of Aussie rations if anyone's interested.
When I joined up in the late '80s the rations were pretty old-fashioned, and I suspect they were largely unchanged from those issued in the '60s for Borneo and Vietnam. They contained corned beef as one of the main meals, which was like a throwback to WW2. There was another meal called 'Luncheon Meat Type 2' which was just disgusting. (No, I never came across 'Type 1'.) There was also a tube of salty 'Butter Concentrate' for your 'Survival Biscuits' (hardtack crackers that were virtually indestructible), which as far as I can tell nobody used.
We also had butterscotch lollies (boiled sweets/hard candy) - you could never get every bit of wrapping off, so if you were game to eat them you ended up with bits of plastic in your mouth. I usually threw them away, along with the butter concentrate.
There were breakfast meals of steak & eggs and ham & eggs, which I guess were similar to those in the old US C-rats. There was also a casserole-style dish called 'Beef with Gravy & Onions' or something like that, which could be turned into a pretty good meal with the addition of spices or Tabasco (brought from home).
In the early 1990s the menus changed considerably. This was probably the result of improvements in food technology and/or knowledge of nutrition. I also think they were changed to reflect the changing tastes of the population at large - we eat a lot of different cuisines in Australia, and even the most conservative Anglo-Saxon people will eat Chinese or Italian on a regular basis. The quality of the food continued to improve during the '90s - we even started getting Tabasco in the packs!

Many people celebrated the introduction of Vegemite, but that stuff is just nasty.
Best main meals in this period were 'Corned Beef Hash', 'Beef with Tortellini', and 'Lamb with Rosemary & Veg' - delicious even by 'normal' food standards. The worst was 'Chicken Pasta' - really bland.
I left the service before the soft packs came in, but the menus posted here look pretty good. They look especially good after looking at some of the other nations' meals!
By the way, those green metal tins were often pressed into service as garbage bins. Very handy.
Can I just say I have also eaten old-school MREs, and I actually
liked the tuna noodle casserole?