Here in Spain we don't have such an especialized system. People enlists in operative branches (infantry, cavalry...) or technical ones (weapon maintenance, cooking, etc...). What you do after you end boot camp is rather random, and often you do several things at the same time, since you do not chose a MOS, but rather a regiment and a branch.
I'm classified as an Assault Engineer (hence the name

) in an armored brigade. I've been in the Primary EOD team, in the storage department and actually I'm driving a modified APC (a local variant of the M113 A2 for engineers, called VCZ-TOA). It's the coolest thing I've done since I've enlisted, if we leave explosives apart.