| 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 | |||||||
| |||||||
| Belligerents | |||||||
| Akwamu |
Ga-Adangbe Supported by: | ||||||
| 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.