1 September on the map of history
11 events the records the map draws date to 1 September, from 1917 to 1991. Each one opens the map on that very day.
- 1917
The Riga offensive — a river crossing behind a hurricane barrage, the method of 1918 tried out
War record · World War I · 1917-09-01 – 1917-09-05
Open the map on this day → - 1939
The map stops drawing Danzig; new borders for Nazi Germany
Border record (CShapes 2.0)
Open the map on this day → - 1939
- 1939
Dachau — open since 1933, and the model for the camps that followed; about 41,500 die there
War record · World War II · 1939-09-01 – 1945-04-29
Open the map on this day → - 1939
Buchenwald — one of the largest camps in Germany itself; about 56,000 of its prisoners die
War record · World War II · 1939-09-01 – 1945-04-11
Open the map on this day → - 1939
Mauthausen — the quarry and its 186 steps; at least 90,000 prisoners die in the camp and its subcamps
War record · World War II · 1939-09-01 – 1945-05-05
Open the map on this day → - 1939
Unit 731 — human experiments and the manufacture of biological weapons at Pingfang, outside Harbin
War record · World War II · 1939-09-01 – 1945-08-15
Open the map on this day → - 1944
The Atlantic pockets — Lorient, Saint-Nazaire and La Rochelle are bypassed and hold out until the German surrender
War record · World War II · 1944-09-01 – 1945-05-08
Open the map on this day → - 1944
Guilin and Liuzhou — the American air bases in Guangxi are overrun and destroyed before they fall
War record · World War II · 1944-09-01 – 1944-11-24
Open the map on this day → - 1950
- 1991
The map begins drawing Uzbekistan, Kyrgyzstan; new borders for Soviet Union
Border record (CShapes 2.0)
Open the map on this day →
What this page states
A border event is what the border record states about its own outlines, under the names IntMap’s map writes on that day: «the map begins drawing», «stops drawing», «new borders for». It is computed by the map’s own code, comparing the day with the day before.
A name the record does not date is not listed: the map’s table of era names is written in years, so a renaming that falls on another country’s border day is left out.
OpenHistoricalMap, which the map draws from 1689 to 1885, is not included: its dates carry no precision, and most of its first-of-the-month dates are months or years written as days.
The war record covers only the wars IntMap documents day by day (World War I, World War II, Korean War, Vietnam War, Arab–Israeli Wars, Yugoslav Wars).
Sources
CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes) · CC BY-NC-SA 4.0
Territory and dates: the documented record, compiled in scripts/wars/. Country outlines: CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes).