Why garrison more than necessary in campaigns?

[uneducated]

Why garrison more troops than needed? Excess troops in the garrison arrive as reinforcements in the battle, but surely it would be better to simply start the battle with those troops, rather than wait for them to arrive as reinforcements?

[Froz]

They don't arrive as reinforcements, you simply get more points to spend for new units before the battle. This is sometimes useful. For example if you want to switch some units into different type or if you would not have enough points to reinforce all your units.

[MVP7]

You also might simply want to downgrade your experienced units to get larger number of less experienced units. This can be convenient for very high quality armies like Romans where even your regulars will outperform all enemies so letting them level up to elite is overkill. Powerful but small army does not generally have as high peak performance as significantly larger average to low quality army if FoG2.

[jomni]

This is machanism in the campaign to ensure that each succeeding battle is relatively more difficult. Leading to a tense climax.

[rbodleyscott]

This is machanism in the campaign to ensure that each succeeding battle is relatively more difficult. Leading to a tense climax.

Actually not. That is a different mechanism.

As others have said, putting more units into garrison than the minimum required allows you to adjust the composition of your army for the next battle.

[jomni]

This is machanism in the campaign to ensure that each succeeding battle is relatively more difficult. Leading to a tense climax.

Actually not. That is a different mechanism.

I guess you’re right. It’s the increase points disparity.

[sIg3b]

Getting rid of too experienced units who have become too costly and increasing your numbers.