I had never heard of it until I took a WWI class in college. We watched the movie-it was eye opening for me.
I have read a bit about it and watched the movie (and a few documentaries as well)
It was sad. I fully appreciate what the British/Australians/New Zealanders were trying to accomplish strategically, but...it demonstrated fully as an object lesson what happens when you make assumptions about an enemy, their will to fight, their capabilities, and overestimating your own.
They thought the defenders would all melt away in the onslaught, and to their credit (and the ANZAK forces detriment...they didn’t...and fought hard.
Churchill took a beating for that for the rest of his life.
I thought the movie was heartbreaking. My British husband will not watch it due to the way the British officers were portrayed. I used to find that annoying, but then realized I would be unhappy to see American officers portrayed as cold and uncaring.