After his father's death, Cronström travelled through Europe on a study tour and was registered as a student at Leipzig in 1679, Leiden in 1680 and Paris in 1681.

Later, he became one of the commanders of a Dutch regiment in Scotland to support King George I of Great Britain durin the Jacobite rising of 1715.

Frederick I of Sweden, who had met Cronström during the War of the Spanish Succession, elevated him to the peerage on his accession to the throne in 1720 and gave him the title of baron.

Cronström was replaced by the Prince of Waldeck while George Wade was also soon relieved of command due to his unpopularity.

Cronström wrote to the Dutch Grand Pensionary, Anthonie van der Heim that "You should not think, sir, that these troops are like those in the previous war."

These conclusions led Waldeck and Cronström to improve the quality of the army significantly in a short amount of time.

[3] In August 1747, Cronström became governor of 's-Hertogenbosch, but the vice-governor, General Samuel de Constant Rebecque (1676–1756), assumed command.