I'd have thought that would have been obvious to you.

2 seconds sound clip from the The Alamo (1960) movie soundboard.

You can hear this line at 01:34:02.871 in the Blu-ray version of the movie.

Quote context

[...]

- That Jethro. Reminds me of a story...

- Please, Crockett!

- No homespun wisdom. No cracker-barrel philosophy. None of the backwoods wit for which you are famous. Good night.

- You better slack off on me, mister. This code-of-honor business doesn't bother me a bit.

- When there's trouble, I come from any direction as sudden and surprising as I can.

- My only concern here is 23 Tennesseans, so you better let me know what's in your mind.

- I'd have thought that would have been obvious to you.

- It's as simple as this.

- There's Santa Anna with 7000 men.

- Up here is the Sabine River. Somewhere around here, Sam Houston is trying to organize an army. And right in between is the Alamo.

- Santa Anna can't go around and leave a fort along his lines of communication. He must reduce the Alamo by storm.

[...]