From Rick Atkinson's CRUSADE, about Desert Storm:

In contrast to the Americans --- who churned out reams of plans, appendixes, annexes, contigencies, and timetables --- the British were almost as relaxed as the French. "I refused to make a plan," Smith later declared. Even as the 1st Division was plunging into the breach, he had not decided whether they would be followed initially by his 7th Brigade or the 4th. The proper course, Smith believed, would manifest itself as the battle unfolded. "Don't worry," he assured Franks, "I'll make it up when I see what the enemy is doing."