Sickle cut or Sichelschnitt in German is the official name of the plan Germany used to invade France in 1940 during world war 2.
The plan is simply instead of attacking/charging straight towards the enemy, you go around the flanks and encircling them from behind.
There dozens of strategies and approaches to life and sometimes, an element of surprise coming from a totally different side is the best one.
Even though they know you’re coming for everything, the where and when should be a personal strategy that you keep close.