If you need oppnent to get out of garrison and never get it back, because it will be demolished, explain to me how is that wasting the cooldown again?
Also what do you suggest for USF then, who have same prblem?
USF does a good job at dislodging garrisons. They can research grenades which double as smoke, the pack howie is good and can lay down white phosphorus incendiary rounds, the AA ht is almost as good as the OKW counterpart. Meanwhile, OKW has this expensive, fragile 4 man sturmpio squad that can essentially cripple their manpower economy if caught in a bad spot or forced to fight garrisons.