Japanese Occupation of German Pacific Colonial Possessions
Part of the Asian and Pacific theatre of World War I

Japanese Warships traveling the ocean.
DateOctober 1914
Location
Result Japanese Occupation
Territorial
changes
Japanese occupation of Mariana Islands, Marshall Islands, Palau Islands, Caroline Islands
Belligerents
Commanders and leaders
Strength
  • 2 Naval detachments "Nankenshitai"
  • German colonial officers with only small police forces of local Pacific islanders defending.

Japan joined World War I in the first place just to get colonies out of it.[1] During October 1914, the Japanese sent vessels to occupy German colonies in the Mariana, Marshall, Palau and Caroline Islands.[2] These islands were later used for strategic advantage in World War II.

Background

Japan joined the war since they were already in an alliance with the British Empire and wanted to gain more territories. Japan joined the war on August 23, 1914, and attacked German colonies in China on August 27.[3]

Actions

Japanese aggression

During World War I, Japan was in an alliance with Britain and decided to go to war with Germany. Japan started to besiege German possessions in China at first. Japan then sent the Imperial Japanese Navy out to the Pacific islands held by the Germans.[4] The British however were annoyed by the Japanese aggression in the Pacific as they told them not to attack them.[5]

German defenses

Germany did not plan on defending the islands, since they did not think that they would be attacked. When the Japanese did so, there was only slight resistance by German officers, police and locals, which did not stop the Japanese invading the islands.[6]

Aftermath

After occupation

After the Japanese had occupied the German islands, they were not faced with any rebellion of some sort.[7]

South Seas Mandate

Following the initial Japanese occupation of the islands, a policy of secrecy was adopted. Japan made it plain that it did not welcome the entry of foreign ships into Micronesian waters, even those of its wartime allies. This was known as the South Seas Mandate.[8]

References

  1. "USNI.org".
  2. MilitaryHistoryNow.com (17 February 2022). "The Capture of German Micronesia — How Swift Action in 1914 Secured Japan a South Pacific Empire". MilitaryHistoryNow.com. Retrieved 28 December 2023.
  3. "Japan gives ultimatum to Germany | August 15, 1914". HISTORY. Retrieved 28 December 2023.
  4. MilitaryHistoryNow.com (17 February 2022). "The Capture of German Micronesia — How Swift Action in 1914 Secured Japan a South Pacific Empire". MilitaryHistoryNow.com. Retrieved 28 December 2023.
  5. https://www.usni.org/magazines/naval-history-magazine/2021/june/japans-victory-world-war-i. {{cite web}}: Missing or empty |title= (help)
  6. "1914-1918 encyclopedia".
  7. "Pacific Islands - Colonialism, WWI, Melanesia | Britannica". www.britannica.com. Retrieved 28 December 2023.
  8. https://encyclopedia.1914-1918-online.net/article/pacific_islands. {{cite web}}: Missing or empty |title= (help)
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