ANZAC Biscuits could be made with molasses, but a lighter sugar syrup, which we call golden syrup in Australia (and in the UK as well) is more commonly used.
Basically a biscuit - cookie in American terms - primarily made of rolled oats, flour, sugar, butter, and golden syrup. They could be easily cooked, packed, and sent to soldiers by their families. Packed carefully in a tin, they would keep a long time.
Today, they can be easily bought in supermarkets anywhere in Australia. They are an icon. They have a protected status in law - you are only allowed to sell them using the name ANZAC if you use a recipe true to the original.
I thought they also contained coconut. I’ve seen some recipes that did.