[DRG]

Trying to get hard info on in-service dates can be a PITA but it appears ( given some of these units were added to the game nearly 2 decades ago ) that the A5 and A6 were amalgamated into one unit since .....according to one source that actually gave some dates...... the A6 was not introduced until 1992 so the 1985 date is ( I suppose given I didn't add it originally ) to cover both the A5 and A6 with the new larger turret.

The A6 and A7 now have Bradly armour values and the A7 now has a 40mm ( subject to testing how that works in the game given this is artillery )