Historian John Pancake describes the later stages of the campaign as "British blundering" and that the "allied operations proceeded with clockwork precision." Naval historian Jonathan Dull has described de Grasse's 1781 naval campaign, which encompassed, in addition to Yorktown, successful contributions to the French capture of Tobago and the Spanish siege of Pensacola, as the "most perfectly executed naval campaign of the age of sail", and compared the string of French successes favorably with the British Annus Mirabilis of 1759. He also observes that a significant number of individual decisions, at times against orders or previous agreements, contributed to the success of the campaign: