The Time Detectives
The Time Detectives®
Learn · Investigate · Master
Investigate →
Learn / Events / 20th Century / First shots of World War 1

First shots of World War 1

July 29, 1914 · 20th Century
War

On July 29, 1914, Austro-Hungarian river monitors opened fire on Belgrade, Serbia, one month after Archduke Franz Ferdinand's assassination in Sarajevo. Austria-Hungary had declared war on Serbia the previous day following Serbia's rejection of key ultimatum terms. The bombardment of Belgrade, situated directly across the Danube from Austro-Hungarian territory, triggered the cascade of alliance obligations that drew Europe's powers into conflict within days. Russia mobilized to defend Serbia, prompting Germany to declare war on Russia on August 1 and on France on August 3.

Key Figures

Friedrich GrundPaul Ekl

Locations

BelgradeZemunSava RiverKalemegdan Fortress

Topics

serbianWWIRussiaGermanysarajevoaustria

Connected Events — 3 Connections

Assassination in Sarajevo created the crisis that Austria-Hungary used to justify its ultimatum to Serbia, leading through diplomatic escalation to the bombardment of Belgrade that began the war Assassination of Archduke Franz Ferdinand
June 28, 1914 · Politics · 20th Century
Declaration of war issued at 11:00 AM on July 28th directly triggered the first military action when Austrian monitor SMS Bodrog opened fire on Belgrade at 1:00 AM the following day Austria-Hungary declares war on Serbia
July 28, 1914 · War · 20th Century
Serbian rejection of the ultimatum's terms provided Austria-Hungary the diplomatic pretext for war declaration, which directly led to the bombardment of Belgrade six days later Austria-Hungary presents ultimatum to Serbia
July 23rd, 1914 · War · 20th Century
The Time Detectives® · Cadet Mission
Investigate This Event
Place it on the timeline. Earn points. Master the connections.
Start →
New to The Time Detectives? Learn what it is →