Boni refers to a coastal area on the southern part of Celebes (modern Sulawesi) that was the target of a Dutch marine expedition in 1905. Although geographically distant from Atjeh, the operation is listed alongside other Aceh‑related campaigns in the corps’ chronology, reflecting the broader scope of Dutch colonial military activity in the archipelago.
The expedition aimed to suppress local resistance and to secure Dutch trade routes in the Celebes Sea.