The military relates very well to planning. In business we talk about battle plans, and war plans, as well as business plans. One of the most recommended books for business is Sun Tzu’s The Art of War. I use Eisenhower’s quote “the plan is useless, but planning is essential” frequently in writing, speaking, and teaching about planning. He makes a critical point.
There’s also the famous line: “no battle plan ever survives the first encounter with the enemy,” often attributed to Colin Powell, but also to Field Marshal Helmuth Carl Bernard von Moltke.