ANZAC biscuits are still very popular everywhere in Australia, no school fete would be complete without them.
As to the history, I'll add that when they were posted to "the boys" overseas, they were packed in the old cake tins which are air tight, vermin proof and stopped them getting crushed in transit. Of course these type tins were, and still are, quite prized amongs home bakers, and it would have been quite a scarafice just to send the tin, yet alone the biscuits. My mother inlaw still uses some ancient tins for her baking, some belonged to her mother and grandmother !
As with most "old" recipes, everyone has their own take on what constitutes a "proper" ANZAC, personally I prefer a slightly chewey texture, but others (in my family) prefer crunchy ! Try and convince your head cook that they are making them wrong and see how far you get !
In all seriousness the commercial biscuits are never as good as home made, but that's probably true of just about every food !