Additional text in Dutch and Indonesian:
"Dienstneming staat open voor flinke inheemsche jongelieden van 16 tot 19 jaar, die de H.I.S., Schakelschool of E.L.S. hebben doorloopen. Nadere inlichtingen of Onder-Districtshoofd.
Ada lowongan pekerdjaan oentoek pemoeda2 Boemipoetra jang beroemoer 16-19 tahoen dan telah tamat dari Schakelschool, H.I.S. atau E.L.S. Keterangan2 lehih djaoeh pada Wedana atau Assistent-Wedana."
Roughly translated: "Enlistments are open for good indigenous young people 16 to 19 years old who have passed through the H.I.S., Schakelschool or E.L.S. Further information at District Head or Assistant District Head."
Schakelschool was a vernacular school.
H.I.S. (Hollandsch-Inlandsche School = Dutch Native School) and E.L.S. (Europeesche Lagere Scholen = European Lower Schools) were Dutch-language schools open to some indigenous people in Indonesia.
"MARINE-VOORLICHTINGDIENST"--Printed at lower right corner of poster. ("Navy Information Service"?)
"DE LA MAR"--Lower left corner of poster. Reclamebureau De La Mar was an advertising agency. Source: AdvertisingArsenal (http://www.reclamearsenaal.nl)