Twas many small but merry bands
Charging through the beach and sands
Conquering both north and south
Fighting in the holy lands
No.
Islands they land, islands they take
Islands they ruled and which they sate
Alone or with hired hands they fight
Always with their brotherhood in sight
The Holy Land on which they battle
Ridding with other men of the saddle
Ruling others from top to down
Wearing many different crowns.
Again this is a process. Think more "Establishment of Aryans in India" than "Fall of Constantinople"