[3] In August 1657 Juel was appointed Ambassador to Poland, and though he failed to prevent King John Casimir from negotiating separately with Sweden, he was made a privy councillor on his return home.

[4] Juel completely sympathized with Griffenfeld's Scandinavian policy, which aimed at weakening Sweden sufficiently to re-establish something like an equilibrium between the two states.

But for the death of the like-minded Swedish statesman Johan Gyllenstierna in June 1680, Juel's Scandinavian policy might have succeeded, to the infinite advantage of both kingdoms.

While Griffenfeld would have obviated this danger by an elastic political system, adaptable to all circumstances, Juel preferred seizing whatever he could get in favorable conjunctures.

He saw some military service during the Scanian War, distinguishing himself at the siege of Vänersborg, and by his swift decision at the critical moment materially contributing to his brother Niels Juel's naval victory in the Battle of Køge Bay.

To his great honor he remained faithful to Griffenfeldt after his fall, enabled his daughter to marry handsomely, and did his utmost, though in vain, to obtain the ex-chancellor's release from his dungeon.