The Battle of Khafji was the first major ground engagement in which war?

Question

The Battle of Antietam (also known as the Battle of Sharpsburg), fought on 17 September 1862, the first major battle in the American Civil War to take place on Northern soil has what other distinction in US history?

Answer 1

The Gulf War, 1991
The Gulf War was waged by 35 countries to expel Iraq from Kuwait after its invasion in the previous year.