Describing directions using the clock face

In Polish you can give relative directions (most often in military context) by using the clock dial analogy — you're at the centre and each number between 1 and 12 is a direction. For example, "Enemy at eight." would mean that the enemy is to the left and slightly behind you. Can you do a similar thing in English? I believe I heard something like this but Google searches turn up nothing.


Solution 1:

Yes, you certainly can.

Enemy at 3 o'clock!

Usually your front is at 12 o'clock and your back is at 6 o'clock.