I've been experimenting with the size of the Roman generals' bodyguard unit in RTW 1.2 and run into a couple of strange things:

(1) If I set the number of men in the unit to 30 (in DATA\export_desc_unit.txt) I get a bodyguard of 120 men with the unit scale on "huge". This drifts up to 124 for generals with influence after a few turns. If I increase the number to 40, I start the game with only 124 men in each bodyguard unit and it doesn't go any higher.

(2) More seriously, if the general's unit (with 120-124 men) enters combat, the game will occasionally crash (with no show_err). Because this happens only occasionally, its difficult to quickly and easily pin down what's causing the problem. I had also changed the stats of the bodyguard unit to be very similar to Equites. I hadn't modded the post-Marian general's unit, so once I passed into the post-Marian era the problem went away.

I've seen no mention of a hard-coded limit on bodyguard units being lower than the 240 man limit which applies to all units. I'd be very interested in anyone else's ideas or experiences in this matter.