Without the stars it is the flag of Eastern Ukraine. Without stars and add a small white cross it becomes the Naval Jack of Imperial Russia.
Add a hammer and sickle it becomes the naval jack of the Soviet Navy.
The St Andrews Cross alone on any colored field now causes foaming at the mouth by leftists.
As I have said, there are other battle flags that do not cause a Pavlovian response of foaming at the mouth. They are still REBEL to the core.
Eastern Ukraine
Confederate Battle Flags of the Indian Tribes
And there are still more I haven't shown.