You mean the Germans?
Persia never sacked Constanople.
The great sack of Constantinople by the (conveniently labelled) Turks occurred in 1453. By the 1520s, they were at the gates of Vienna, and were routed utterly in 1529 by forces under the command of the not-well-known (sadly) Count Salm.
There is some historical testament that the Turks were not defeated, but merely retreated (although one could hardly say they did so in good order) because the phase of the moon -- evidently important to their commanders -- was not auspicious.
I have no dog in this fight.
The Turks, of course, tried again -- persistent, they were -- and by 1683, Vienna was again under siege.
The Hapsburg ''emperor'', Leopold I, during this time, was a snivelling little coward, he got the hell out of Dodge -- northward being the convenient direction.
Fortunately for all of us, none other than the King of Poland, Jan Sobyeski, led a sizeable relief force to Vienna, and kicked the Turk back again (they weren't too swift about logistics; fearsome fighters, certainly -- but it's difficult to fight for YEARS on an empty belly).
Yours for more accurate history than is generally taught in American schools, and -- politically incorrect person that I am -- may I wish you a VERY Merry Christmas, and the most prosperous of New Years!