My first thought is that maybe he fights you putting on his leash because he equates that to being tied up in his area. I agree that the crate is probably the best bet for night time accidents but you really need to find a way to let him be gated off or use one of those doggy play pens to contain him rather than tying him up indoors. Dogs have choked themselves so tying a dog up just plain scares me. Bulldogs in my experience thrive on attention so he could simply be acting out. As others have stated your wife really needs to be involved in the training especially with you being in the military. He needs to know that she's the boss too. I know you have your hands full with a 5 month old but trust me...diligent training now will be rewarded later on. I know it's a lot of work but the dog needs to experience free roam under close supervision in order to learn how you want him to behave. When you are busy eating dinner, bathing the baby etc... and can't keep a watchful eye put him in his crate or playpen but it's really important to allow him free roam as much as possible so that you can teach him what is acceptable and what is not. Good luck with your training.