Ammo Carriers as Support Units?

[jivemi]

As the title implies, can you buy ammo carriers as support units during a campaign? Reason I ask is 'cuz as Israel vs Sovs 1986-87 there didn't seem to be any available. Looked in Artillery and Misc categories but didn't see any (there were 750 support points available for a meeting engagement). Do they have to be part of your core, is this perhaps peculiar to the time period, or am I missing something? Thanks.

[DRG]

Both Isreal and Russia have Ordnance Sections that cover that time period in MISC