June 15

Saturday 15, 1957:

Eindhoven University of Technology is founded.

Thursday 15, 1775:

American Revolutionary War: George Washington is appointed commander-in-chief of the Continental Army.

Wednesday 15, 1667:

The first human blood transfusion is administered by Dr. Jean Baptiste. He transfuses 12 fluid ounces (350 ml) of sheep blood to a 15-year-old boy. The boy later dies and Baptiste is accused of murder.

Tuesday 15, 1520:

Pope Leo X threatens to excommunicate Martin Luther.

Tuesday 15, 923:

Battle of Soissons: King Robert I of France is killed and King Charles the Simple is arrested by the supporters of Duke Rudolph of Burgundy.