Slitherine

You can add an unlimited (?) number of AI Teams beyond the default 16 teams.
But there's no way to scroll through a long team list when you want to add a unit to a team.
The max number of select-able teams seems to be dependent on the screen resolution of your monitor.
I can display max 30 teams on my setup.

Eric,

Have you noticed any reduction of performance with the AI teams above 16?

The On-Line Manual has this:

CTRL + numpad number (with unit selected: Set AI team <number>

ALT + numpad number (with unit selected: Set AI team 10 + <number>

Regards,
Earle

No, but I have not worked with single scenarios in v2.6.7.
I think it is wise to keep the number of units pr team fairly low. Maybe no more than 10 units pr team.

Erik,
Could you clarify "units";
do you mean (10) planes, tanks etc. or since most are worth (3) units - Do you mean around (3) planes, tanks etc.

When doing Essen'43, I noticed (in v.2.40) that the AI group was "happier" with about (3) planes, tanks etc. Of course with my scenario everything went towards Essen, you could have close to (40-50) Allied Planes (under user control) and under AI teams (of 3 planes each) resulting in close to (30)-(40) planes; So a total close to (80-90) planes all very compacted in a small area.

Thanks, Earle

For instance 10 land units.
I prefer a team to reflect historical combat organizations, like 3 infantry units + 1 artillery unit + x ad hoc support units like recon/tank/AA/AT.
Combined arms to put it short. I think this helps the AI as well.