[afei - manners please, don't hijack the thread.]
1stly, anything but PES D, E & F is technically considered
"combat-fit". PES C itself doesn't rule out frontline combat (eg.
see C1L1 below), but it does advocate posting to only certain
operational vocations.
2ndly, the PES status for A, B & C refers more strictly to
participation in IPPT. The L-Code (Land Deployability Code) refers
more to where you can be vocationally deployed.
So:-
PES C - Fit for some operational vocations (Modified BMT)
>> C1 - Required to take IPPT but can be excused up to 2
static stations
>> C2 - Do not have to take IPPT except Regulars (who take
the AAFT)
>> C9 - Not required to take IPPT
>> L1 - Fit for field duties including front-line duty
>> L2 - Fit for field duties but only in Unit HQ or rear
areas
>> L3 - Fit for operational duties at Bases only. Not fit for
field duties/exercises
Both C1L3 & C2L3 postings would be something like camp medic or
signal-storeman if you're sent to a frontline unit. On the whole,
C9 personnel have more chances to go to a rear-echelon outfit like
those at BDG- or DIV-level or to a MINDEF desk job. But a lot of L3
personnel also end up with combat-support/logistics (supply,
maintainence, transport, medical, ordnance, etc.) under the DISCOM
umbrella.