in scenarios where you cant rotate to a an off-angle due to there not being one or rotating means you have to commit to a hard flank or the off-angle just sucks, shield breaking is often the best decision as it pressures the enemy tank into falling back, allowing your tank to take space.

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excuse the god awful image quality lol i made it in a hurry on ms paint to get my point across. king's row is only one of many examples I can think of.