To plasmakrap
I maybe crazy but not that crazy to put something like a abrime in concrete

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As for defense I usually don't use much bunkers but i like your idea of trading a platoon for a bunker.
As for the reaction turn I heard about it in the game guide but what will it do?
And to PanzerBob
okay so I will try and see if anything happens and I have never seen the computer put infantry in bunkers either.
In a regular game how many shelter bunkers do you use most of the time?I don't use them but maybe I should start.