After sustaining a famous siege in his capital Bactra (Balkh), Euthydemus obtained an honourable peace by which the hand of one of Antiochus's daughters was promised to his son Demetrius.
His sensitively honourable nature, which in early life had caused him to shrink from asserting his belief in Thirty-nine articles of faith which he had not examined, was shocked by the enormous abuses which confronted him on commencing the study of the law.
He again accompanied De Ruyter in 1672 and took an honourable part in the great naval fight at Sole Bay against the united English and French fleets.
But they undoubtedly maintained the spirit of Antisthenes unimpaired and held an honourable place in Roman thought.
He broke through the alleged tradition, bequeathed by Suleiman the Magnificent to his successors, that the sultan should not command the troops in person, and took command in the Persian war which led to the capture of Bagdad (1638) and the conclusion of an honourable peace (May 7,1639).