The regiment was a part of a small army raised by Bernhard of Saxe-Weimar in 1631 to help Gustavus Adolphus against the emperor during the Thirty Years' War.

With the death of Gustavus Adolphus and the disaster at Nördlingen the army of Bernhard of Saxe-Weimar entered French service on 26 October 1635.

The Trefsky regiment took part in the victories of Rheinfelden and Breisach, but with Bernard of Saxe-Weimer's death in the summer of 1639, the army loses its leader.

(Battles and Combats) When Louis XVIII returned to France again after the second abdication of Napoleon I, one of his first acts was to dissolve the entire French Army.

When the 1830 revolution against the Bourbon monarchy broke out, the regiment was sent to Angers to ensure the maintenance of law and order, but did not have to actively intervene.

The 1st Cuirassiers left the latter garrison to take part in the short campaign in Belgium in support of Belgian independence.

[1] Accordingly, the 1st Cuirassiers remained in peacetime garrisons for most of this period, intended for use as shock troops in a future European war.

As a regiment which had remained horse mounted throughout the war, the 1st Cuirassiers had had little opportunity to distinguish itself on active service after the opening stages of the conflict.