Mr. Spock wrote:
I can't tell undeployed howie to attack, with none of 3 commands (3, space, alt). In which build you experienced mentioned issue?
You are right. Thanks for pointing that out Spock. I now realized it's only a problem with grouped Howitzers, not single howitzer. When 1 or more are deployed and others are not...
1 and 2 are deployed, 3 is not:

Yet, I can give attack order to all of them. When I do, howitzer 3 will do barrel rolls in place, because it is not deployed, so will react strangely when ordered to attack without deploying first. See how ALT command is enabled? Space and ALT should be disabled, when not all howitzers are deployed. Attack command (3) is disabled, but Space and ALT seem to be working separate.