What a supreme commander in 1944 knew about leadership

It was 1944 and the Allied generals gathered to see how they were going to plan the D-Day invasion of Normandy. Almost every general talked about their plans on how to send their soldiers into battle… Except one of them.
Dwight D. Eisenhower, the Supreme Commander, tired of listening to those generals, stopped the conversation and explain a very basic principal:

“Pull the string and it will follow wherever you wish. Push it, and it will go nowhere at all.” —Dwight D. Eisenhower

It doesn’t matter how hard you push a string, in the end it will double up itself and you won’t get nowhere. The key is to pull it from the front, that’s the only way to make it follow you.