Who said "A plan is only good until first contact with the enemy."?

This quote is attributed to George S. Patton.

A plan is only good until first contact with the enemy. - George S. Patton

"A plan is only good until first contact with the enemy."

George S. Patton

Military General American 1885–1945

"Accept everything about yourself - I mean everything. You are you and that is the beginning of all wisdom."

"Americans love to fight. All real Americans love the sting and clash of battle."

"A pint of sweat will save a gallon of blood."

"Audacity, audacity, always audacity."