How about some strategy & tactics?

[Mr Grumpy]

Looks like you have a good handle on this already..........

Knowing when to assault is a bit of a black art as you can never see the "dice roll", so it is only over time that you will gain a feel for what works and what doesn't, the experience is in spotting the bad "dice rolls" and realising there was nothing wrong with your decision to assault, you just got some bad luck!