Many people confuse the Swiss flag with the red cross:
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3663670/

And artists are no exception.
Just search for red_cross and you'll find many some that are acutally Swiss flags, e.g.
post #856445
post #837875
post #771259
I'm sure you'll find more if you search for medic or lifeguard

Remember, kids:
It's called the "red cross" because it's a cross that's red.

Sounds useful

Munkelzahn said:
Remember, kids:
It's called the "red cross" because it's a cross that's red.

I literally didn't notice that until just now

It's one of those 'obvious until you think about it' things, maybe

Red_cross is aliased away to +, which is simply a generic tag for the plus symbol. That's why searching for red cross finds a lot of unrelated images: it doesn't actually exist as a tag.

how about medpack

omg how do people confuse a WHITE cross with a RED cross, buncha dorks.

We should tag those images as White_cross, simple answer.