Do you mean lines in the battlelog like these?
"2:20:42 PM (Reporting) Commit Chance 1008586 P. Kearny' Corps 100 %, Rolled: 56 Commited
2:20:42 PM (Reporting) Commit Chance 1003511 Army of the Potomac 100 %, Rolled: 11 Commited"
If so, this just means that the chance for this unit to commit to battle was 100% and in both cases the number "rolled" was lower, so the whole stack was committed to battle.
A line like this line is typically what describes the number of subunits (SU) involved:
"2:20:42 PM (Reporting) GetRound SubList 128 SUs can be involved during this round."
It should jive with the terrain feature number of line units and support units allowed. This number may be modified by the respective overall commanders for total units in the battle.
"In open terrain only (clear/prairie/desert/wood), the Units Quotas are modified by leader (rank)*(offensive/defensive rating) depending whether in offensive or defensive posture:
Combat Units Quota: (+25 points)*[(rank)]+(off/def rating)]
Support Units Quota: (+10 points)*[(rank)]+(off/def rating)]"
http://www.ageod.net/agewiki/Frontage
http://www.ageod.net/agewiki/Combat_Explained
[ATTACH]37527[/ATTACH]
P.S. To avoid confusion, the battlelog lines and the terrain pic are from different battles that I had.
I'm the 51st shade of gray. Eat, pray, Charge!