I am all for not forgetting the past, also Happy Anzac day. Since it was the first military engagement, it also unified the people, and generated some pride.
Ok.
On the other hand we should remember, that when all those colonies were lured into an unnnecessary war in Europe by England, and so making it the first worldwide war, millions had to die .. for what. What was better, after WW1. And no, it was not for freedom, not even for a broken treaty, as has meanwhile seeped to the surface of public knowing (those hundred years, so long no one may have insight in the papers, for .. certain reasons). Never forget, it is all propaganda.
And then, Gallipoli. I guess you have to be happy your colonies joined, however i would see this a bit different, especially if i had been treated like the US and Australia, before.
(now ducking for incoming bullets
)