[RedGuard]

Thanks for replying me. It helps a lot.

But I believe there must be some misunderstanding about question 2. I mean, for instance, provided I have five infantry squads as well as my opponet do, each of the squads is able to shoot the whole five squads of the enemy, and there is no artillery, air force or sth like that. We both know that the first squad who fire will be shot by five squads opposite and surely take lots of casualties. So my opponent and I decide to stay there, wait for the enemy to attack. It is undoubtedly ridiculous.