Victory in Battle
Jun 4 Second Italian War of Independence: Battle of Magenta, results in a French-Sardinian victory under Napoleon III over the Austrians under Marshal Ferencz Gyulai

Napoleon III
- Jun 6 Australia: Queensland is established as a separate colony from New South Wales (Queensland Day).
Victory in Battle
Jun 24 Battle of Solferino, Northern Italy: a French Army under Napoleon III and a Sardinian Army under Victor Emmanuel II overcomes the Austrian Army under Emperor Franz Joseph I

Victor Emmanuel II

Franz Joseph I

Napoleon III