World War I Battle of Gallipoli

The Darnells campaign began with a significant German force facing the Allies. Over six months, both sides engaged in fierce battles across a small peninsula, aiming to control a strategic strait. Despite the high stakes, the conflict resulted in a stalemate, with the Allies losing over 40,000 men. By October 1915, recognizing the futility of further combat, the Allies withdrew.

What was the outcome of the Allies' campaign by October of 1915?

What did the Allies realize after losing over 40,000 men?