Assault on Osu

Assault on Osu
Part of the Gã-Akwamu War
Drawing of Christiansborg and houses of Osu on the North side of the fort, Early-18th Century
Date 1678 Location Osu, Accra (Modern-day Ghana) 5°33′14″N 0°10′30″W / 5.55389°N 0.17500°W / 5.55389; -0.17500 Result Danish-Accran victory
Belligerents
Akwamu	Ga-Adangbe Supported by:  Denmark-Norway Danish Gold Coast
Commanders and leaders
Ansa Sasraku II	Ofori I Johan Ullrich

The Assault on Osu (Danish: Angrebet på Orsu) was an assault on the coastal village of Osu Castle by the Kingdom of Akwamu against local Accrans, who received support from the Danes at Fort Christiansborg. The assault resulted in military failure for the Akwamu, mainly due to Danish artillery, and the Akwamu were forced to retreat.