I have come across this fantastic book by Mr Mesut Uyar called "The Ottoman Defence Against The Anzac Landing" published 2015.
This is the book I was looking for while I was researching The Anzac Legend. It's a pity it was published after my book. It gives great insight into the Ottoman Army and it's pre-Great War development.
Of most interest to me was the revelations of Kemal's movements during the day of 25 April 1915, and also the involvement of the 72nd and 77th Regiments. Previous books I've read did not clearly and sensibly outline these important parts of the battle.
I recommend this book to anyone who wants the latest good oil on the Ottoman Army side of the battle. Apart from all the background info, unfortunately it only covers the day of the Landing in detail.