I was in highschool in Australia in 1991. It was there that I ever learned of "Gallipolli" and then as center piece of WWI. Since then I had a look around in the world and Australia is only one of a few countries that consider Gallipoli "very important". It seemed that "World War I" and "Gallipoli" were synonyms. Which was a bit strange for my ears, since I had never heard of "Gallipoli" in Europe. In Australia the attention Gallipoli received is of course understandable, as it was important to them - but on a wide spectrum it isn't that important history-wise.
The most important element might be the career-boost that Mustafa Kemal Atatürk got from it. Still - in the Dutch languaged wiki page on him, the word "Gallipoli" isn't even there. And in other language-wiki's (like Italian, Norwegian, Greek, and Turkish

) "Gallipoli" isn't mentioned in Mustafa Kemal Atatürk's wiki either, while in some other language-wiki's it is.
So: enjoy your Anzac-Day, but don't consider Gallipoli too important.