In 1755 the Danes got permission from Alivardi Khan to establish a trading post at the Hooghly River near Calcutta.

[1] In 1756, the Nawab of Bengal, Siraj ud-Daulah, wanted the Danes to assist him in the Siege of Calcutta.

[2][3] Demarchis, the commander of Serampore, took office in 1762 and the British quickly took a hostile view of him.

[4] This hostility only grew bigger when some English sepoys were changed with 25 lashes each, because of their assaulting on Danish peons.

[4] The occupation did not last long though, and already in the same year, the British withdrew the city because of a Danish apology.