World War II was fought between two main coalitions known as the Allies and the Axis powers.
Notes on verification
Well-established historical fact confirmed by multiple authoritative sources including USHMM and Britannica. [cascade flags: aggregator_dropped_primary_exists | tier=unverified indep_score=0.375 clusters=1 claim_tier=everyday] [kind-backfill 2026-09-15: kind=empirical eligibility=high] [harvest 2026-09-16: +4 source(s) on new hosts; tier unverified->silver indep=0.983 clusters=3]
Sources
- World War II (wikipedia)
- https://encyclopedia.ushmm.org/content/en/article/axis-powers-in-world-war-ii (corroboration)
- https://www.nationalww2museum.org/war/articles/allies-world-war-ii (corroboration)
- https://www.britannica.com/event/World-War-II (corroboration)
- https://www.encyclopedia.com/history/educational-magazines/allies-and-axis (corroboration)
- https://www.ducksters.com/history/world_war_ii/ww2_allied_powers.php (corroboration)