If I try and go heavy on either deads or squats, I can't walk for two days...I just hobble. Military is tough on the lower back too...primarily when it is already giving me grief from squats or deads.

Take it slow and easy. Do lots of stretching. I found that I can hang from a bar and rotate my pelvis forward, until the right angle is reached, that relieves pressure. Intense pain courses my lower body for a short while, but after several of these movements, I can walk again...for a while.