Which is why I remembered that we've kept "facing". Surprise or numbers always kept showing up!
Then that's "surprise", and they get a side facing bonus, or back facing if they wait for the PCs to pass them up.And the insistence of later games in treating an adventuring party as a series of one on one duels is one of my major complaints against them. If a band of Orcs is hiding in a side passage and attacks the PC party from the side, the notion that "they don't get flanking because they don't attack from two sides at once" is so fucking ridiculous that whoever thought up that rule, and anybody who thinks it is a good idea, needs to be punched repeatedly in the nutsack until they smarten up.
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