The Five Knights' case (1627) 3 How St Tr 1 (also Darnel's or Darnell's case) (K.B. 1627), is a case in English law, and now United Kingdom constitutional law, fought by five knights (among them Thomas Darnell) in 1627 against forced loans placed on them by King Charles I in a common law court. In 1626, Charles I had recalled Parliament to approve taxes for the Anglo-Spanish War (1625–1630). While supportive of the conflict, Parliament first demanded an investigation into the conduct of the army commander, the Duke of Buckingham, notorious for inefficiency and extravagance. Charles refused to allow this and instead adopted a policy of "forced loans"; those who refused to pay would be imprisoned without trial, and if they continued to resist, sent before the Privy Council. The Chief Justice Sir Randolph Crewe ruled this policy was illegal and the judiciary complied only after he was dismissed. There were over 76 men who refused to pay the tax as they claimed that it was unauthorized by Parliament. Among them were Sir Thomas Darnell, Sir John Corbet, Sir Walter Erle, Sir John Heveningham and Sir Edmund Hampden, who submitted a joint petition for habeas corpus. Approved on 3 November 1627, the court ordered the five be brought before them in order to clarify what law they had broken; it became known as Darnell's Case, although Darnell himself withdrew. The case was heard by Sir Nicholas Hyde, the new Lord Chief Justice, with the prosecution led by Attorney General Sir Robert Heath. The problem before the court was the defendants had been arrested but the warrants did not specify why; this was unsurprising, since Coke had previously ruled the loans themselves were illegal. Heath claimed the Royal Prerogative allowed Charles to take whatever action he considered necessary "in time of crisis" and thus he had no need to justify the detentions.