About strategy cards

By vonrunkstedt, in Tide of Iron

I'm making a separate thread about the strategy cards. I think I'm missing the point of some cards:

In the Morale deck 1:

-What's the use of the card "Preparations" (immediately end your turn or remove one of your op fire tokens)

In Command deck 1:

- I cant understand how the card surprise assault works. (Immediately before your opponent takes an action, you may discard this card to take an action)

Am i supposed to shout "Im using surprise assault, haha!" before using it? And does it make any sense taking an action before my opponent in Command phase ?

Preparations :

Immediately end your turn: Every turn you must perform a certain number of actions, so if you 'immediately end your turn' you avoid expending some actions. Sometimes the game becomes a slow bicycle race in which you try to run the other guy out of actions so that you can perform your remaining actions unopposed.

Remove one of your Op fire tokens: Placing an Op Fire token prevents that unit from moving or making an attack during your own turn. If your opponent hasn't offered you an Op Fire target or there is a pressing need to react to something, you might want to remove the token and use the unit in other ways.

Surprise Assault :

You buy it in the Command Phase and place it in your Play Area. Then you 'spend' it at a moment of your choice during the Action Phase. You can shout what you want when you play it.