Van Alphen was a lieutenant ter zee who commanded a landing division of 250 men, including 101 marines, in **April 1859 during the First Boni Expedition 1859 against the kampong Saribanoa on the island of Sepora.
Action
His forces captured the settlement after a coordinated amphibious assault.
See Also
Source
De geschiedenis van het Nederlandsche Korps Mariniers van 1665‑1945, OCR text, pp. 113.