I had the idea of having a quiz on the Viet Nam War, so I started a thread. This is the same thing only it is about the Forgotten War, the Korean War. The rules are you only ask a question if you answer a question right. So if I ask a question, you answer it, I tell you you're right, then you ask a question. This is the exact same set of rules as the WWII Quiz and the Viet Nam War Quiz.
If possible, please post a source with your answer.
After a fixed period of time after the correct answer is confirmed (i.e. two days) if the original person to answer has not submitted a new question, the forum becomes open for new questions by someone else.

I'll start off and good luck.

What was the name of the first US Army unit to come under fire in Korea, also name the place and Commander.

Battle of Osan

This battle was the first engagement between US and North Korean forces during the Korean War. Vastly outnumbered and ill-equipped, US Task Force Smith of 500 men suffered 150 casualties while inflicting about 120 on the enemy and delaying them half a day.
Task Force Smith was named for Lieutenant Colonel Charles B. Smith, commanding officer, 1st Battalion, 21st Regiment, 24th Infantry Division.

Source: http://en.wikipedia.org/wiki/Task_Force_Smith

You are Right!
Your turn, Cooler King.

My first thought was around Pusan. Good question Tom.

Who replaced MacArthur as C-in-C of UN Command?

General Matthew Ridgway?

Right on target, Fox. You're up.

Say, what's happened by this date?

August 1st to September 15th, 1950?

The defense of the Pusan Perimeter.

You got it. You may fire a question when you're ready.

Who was awarded the first Distinguished Service Cross in Korea?