That article lists an interesting variation for Israel:

A simplified but effective description of the S.T.A.R.T. is taught in the Israeli army to non-medical personnel: the injured who are lying on the ground silently should be prepared for immediate transportation; injured lying on the ground but screaming are injured whose transportation can be delayed; and the walking wounded need help less urgently.

Take-home lesson: if you're injured in the Israeli army, don't scream for help, because that will make us stop helping you. Just play dead instead. :-)