I must be a cow

I've been two them on at least two continents, maybe three

Funny thing, growing up they were all over the place, but when I popped across the border, there they were too but with a different logo (the logo you posted is what you would find in Germany)

Turns out there are actually two different chains, both called Aldi, but called aldi1 and aldi2 on paper

I guess the whole thing got started by two brothers who ended up having a disagreement about something (produce related, if I remember correctly)
After the disagreement they each took half of the company and went thier own way...the only outward difference being the logo