Wikipedia:Selected anniversaries/July 18
- 64 - The Great Fire of Rome burned completely out of control, while Roman Emperor Nero reportedly played his lyre and sang as he watched the blaze from a safe distance.
- 1863 - American Civil War: The first formal African American military unit, the 54th Massachusetts Volunteer Infantry, saw action against the Confederacy's Fort Wagner.
- 1925 - Adolf Hitler published his personal manifesto Mein Kampf.
- 1944 - General Hideki Tojo (pictured) was forced to resign as Prime Minister of Japan after a series of setbacks towards the end of World War II.
- 1982 - The Guatemalan army and allied paramilitaries slaughtered upwards of 250 Maya campesinos in the Plan de Sánchez massacre.