[MarkSheppard]

A year ago, I got "AMX-30 Char De Bataille 1966-2006" Volume I-III by M.P. Robinson; which as of 2014 (date of publication) remains the most recent english-language survey of the AMX-30 series of tanks and derived AFVs.

Results of studying the books (the data is spread out amongst the different volumes):

Unit 020 "AMX-30" is actually the AMX-30B (the B is for Char de Bataille) initial order built from 1965-1976~ with the .50 calibre CMG.

Unit 021 "AMX-30B" is the follow on AMX-30B order built from 1976 onwards with the 20mm Coaxial Cannon, plus earlier production vehicles which were updated to that standard.

NOTE: Wikipedia claims that 'Encyclopedia of Tanks' by Duncan Crow and Robert J. Icks (c) 1975 says that the AMX-30 got gun stabilization from 1971 onwards, and the 20mm cannon from 1972 onwards; but I don't have that reference actually on hand to verify.

Unit 022 "AMX-30B" may not actually exist in real life; the new Obus Fleche (Sabot round) developed for the 105mm F1 gun from what I have been able to read from between the lines was paired with the AMX-10RC derived fire control system (COTAC) put into the AMX-30B2 modernization.

But I think it's allowable as a 'war emergency' compromise; representing non-standard ammunition delivered with xeroxed ranging correction cards for gunners to defeat the T-series menace in the early 1980s in a cold war gone hot situation.

Unit 023 "AMX-30B2" The fire control numbers may be a little bit too high (35) as AMX-30 Char de Bataille says that the B2's fire control system was heavily based upon and derived from the already existing AMX-10RC fire control system, which has a rating of 15 (Unit 010 AMX-10RC).

Perhaps adjusting it to somewhere between 20-25 would work better, representing evolution/iteration of the AMX-10RC fire control system by the time it was adopted for the B2?

Unit 024 "AMX-30B mod B2" I'm not exactly sure what this unit represents. It says AMX-30B mod B2 and it's start date is the same as Unit 023 AMX-30B2, indicating that it might be a "lightly modernized" AMX-30B capable of firing the new sabot round; but the armor protection is more in line with an AMX-30B2.

Unit 025 "AMX-30B2 Golfe"
and
Unit 012 "AMX-10RC sbd

According to AMX-30 Char de Bataille; the new CASTOR (DIVT-16) thermal imager was procured from 1988-1992 for AMX-10RC and AMX-30B2 upgrades/conversions. At first, they only had enough CASTOR units to fit platoon commander's tanks in each regiment. By 1990, there were enough on on hand to start work on giving every tank undergoing B2 conversion a thermal sight.

Even then, when the 4e Regiment de Dragons went to the Gulf in 1991, they didn't have enough CASTOR-equipped tanks to fill out their OBAT, so they stole the 1e Regiment de Cuirassiers' CASTOR equipped tanks to make up the deficiencies.

Units 027 and 028 "AMX-30B2 Brenus" The Brennus vehicles were placed into War Reserve Storage in 2006, and then offered for international sale -- the current 'end of use date' in game is 12/2010.

Miscellaneous AMX-30B2 and Golfe notes: Apparently as of 2014, the French Army keeps two squadrons (40 to 50 tanks) of AMX-30B2s in service to act as FORAD (Forces Adverses) (aka OPFOR) and they have fully operational main guns. I don't know if this meets the criteria for inclusion in the OBAT past the 12/2005 end of service date for Unit 023 AMX-30B2.