29.22 Specifics of the LEGION TEACH command.

Syntax: LEGION TEACH <legion> <skill>.
This command is used for you, the individual specialist (doubtless a fine example of whichever guild or city in which you ply your trade) to augment the training of a specific legion. You will need to specofy the legion to teach and the specialist skill to augment, and the legion must already be training at that skill. Performing a TEACH will push the legion to almost immediately advance a percent in the specified skill. It comes at a price, however: your precious lessons. The larger the legion and the higher the skill percentage, the greater the cost per percentage improvement.

Precise algorithm is:
X = legion skill value, between 1 and 5. Divide legion's skill by 20 and round up to nearest whole number, e.g. 1-19 is 1, 20-39 is 2, 40-59 is 3, 60-79 is 4, and 80 above is 5.
Y = legion size value. Divide legion's size by 50 and round up to the nearest whole number, so a legion of 30 would be '1' and a legion of 300 would be '6'.
OPTION A:
The lesson cost is a simple sum: X multiplied by Y, minimum of two per LEGION TEACH instruction. So to take a legion of 100 men from 30% in a skill would be 2 x 2 = 4 lessons. To take a legion of 500 men from 75% in a skill is 4 x 10 = 40 lessons.

OPTION B (currently live):

The lesson cost is a simple sum: add X to Y, minimum of two lessons per LEGION TRAIN instruction. So take a legion of 100 men from 30% in a skill would be 2 + 2 = 4 lessons. To take a legion of 500 men from 75% in a skill would be 4 + 10 = 14 lessons.