The siege of Constantinople in 717-718 is often overlooked. Although it was much less significant, it seems that the Battle of Tours in 732 is better remembered.
I can’t help but feel a great opportunity was lost in 1918 with the defeat of the Ottomans to re-establish a Western-oriented, Christian Government in Turkey. Perhaps even bring back the Byzantine rulers.
I suppose it was a few centuries since the Turks were at the gates of Vienna, so the need for such was seen as quite preposterous at the time....