Atlas of Battles

siege, early modern

Siege of Jailolo

Siege of Jailolo was a siege conducted in 1551 at Jailolo, in what is now Indonesia. Its exact site is not recorded; the atlas places it at Jailolo. The recorded result: Portuguese allied victory. Recorded strength: 180 Portuguese soldiers; 5,000 allied men from Ternate and Bacan against 1,200 soldiers; Large quantity of cannons.

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Fought1551
WhereJailolo, Indonesia1.083N, 127.500E, placed at the location, approximate
OutcomePortuguese allied victory
BelligerentsPortuguese Empire; Sultanate of Ternate; 24px|border Sultanate of BacanagainstSultanate of Jailolo
Casualties and losses18 Portuguese killedand300 killed; Many wounded

Record

Date1551 (year precision)
to 1551
PlaceJailolo, Indonesia
1.083N, 127.500E
KindSiege, early modern
Strength180 Portuguese soldiers; 5,000 allied men from Ternate and Bacan1,200 soldiers; Large quantity of cannons
Casualties and losses18 Portuguese killed300 killed; Many wounded
Commanders
  • Bernaldim de Sousa
  • Balthasar Velloso
  • Prince of Bacan
Siege of JailoloSiege of JailoloBattle of MorotaiBattle of MorotaiTernate100 km1.083N, 127.500E
Placed at Jailolo; the exact site is not recorded. with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

Elsewhere in 1551

Siege of Jailolo is one of 1,470 engagements of the 16th century in the atlas and one of 106 in present-day Indonesia.

Sources

Identity, coordinates, dates and the war from Wikidata Q139854091, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Siege of Jailolo (1550), revision 1370742063, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.