Japan — WW1

Use countryKey (e.g., canada)

Context

Japan entered the war in 1914 to honor its alliance with Britain and to expand its influence in the Pacific and East Asia. Its military operations focused primarily on German colonial possessions.

Rationale used for numbers used on the war statistics page

Measure Selected value Selected source Rationale
Population (baseline) 53,600,000 ww1-source-book
The World War One Source Book

What sources report

Military deaths

Source Value Scope / notes Citation
ellis_cox_1993
The World War I Databook
John Ellis; Michael Cox • Aurum Press • 1993
medium
300
Ellis, John & Cox, Michael. The World War I Databook. London: Aurum

Mobilized / served

Source Value Scope / notes Citation
ellis_cox_1993
The World War I Databook
John Ellis; Michael Cox • Aurum Press • 1993
medium
800,000
Ellis, John & Cox, Michael. The World War I Databook. London: Aurum

Population (baseline)

CWVMP uses: 53,600,000 from ww1-source-book
Source Value Scope / notes Citation
ellis_cox_1993
The World War I Databook
John Ellis; Michael Cox • Aurum Press • 1993
medium
67,200,000
Ellis, John & Cox, Michael. The World War I Databook. London: Aurum
ww1-source-book
The World War One Source Book
Philip J. Haythornthwaite • Arms and Armour, London • 1993
medium
53,600,000
wikipedia-ww1
World War I casualties
2026
medium
53,600,000
Source link (accessed 2026-02-01)

Editorial principles in selecting the figures to use

No rationale narrative yet for this country/conflict.

Discussion of discrepancies

No discussion narrative yet for this country/conflict.