There is a youtube channel name Usualy hapless.

引用自 hisvin：

There is a youtube channel name Usualy hapless.

Thank You. It helps a lot.

The game has a tutorial mini-campaign. You can find instructions on what to do in this campaign in the manual. You right-click the game in Steam, select "Manage/Browse local files", and get into "Manuals" directory.

Two most importants are:
CM Red Thunder Manual 3.01.pdf - contains walkthrough of the tutorial campaign
CM Engine Manual v4.00.pdf - contains detailed information on how everything works in the game

Mortars - you can use them either directly (like normal infantry - they have to see the enemy) or indirectly (like artillery, when they don't see the enemy, you need a spotter and be in contact with the mortars).

I personally prefer turn-based mode, but you can also play in real time. In real time you have more control over your units (you can issue orders at any time), but it is much easier to miss something, because you don't have replays.

All your units will automatically fire on any enemy in range, unless you give them "hide" order or restrict their firing arc.
If you want them to hold fire, you can either issue a "hide" order (which means, they will try to hide, will be harder to hit, but they will also have reduced visibility) or restrict their firing arc. You can do it with "target arc" order while holding SHIFT, it is described in the tutorial.

And U need use "mouse with 15 button. And set up all the commands on it.
Now I have a carpal tunnel of it.