The gains are expected along the lower back too. However, this can be done without the cable.
This is where I want to pitch-in about free-hand exercises that use weights that are not connected via cables and chords. The cable pull-through can be done using only dumbbells. The movement has to be slightly jerky, but not toe the extent that you are not keeping your back almost parallel to the ground. I think of this as a core exercise too though many gym experts say that this is more for strengthening and endurance building.
I have been a slower learner at the gym but there are small notes I made all along and many of them have proven to be true. Many people commit the mistake of turning the military press into the push press. This is done when you sit rather than stand with legs being shoulder-apart – the ideal way to do it. This engages the core more. Your stability muscles are used more. Doing the press without engaging the entire neck and upper back seems like a waste to me. Many guys do the press without bringing the weight down properly, usually pushing it up as soon as it dips near the circumference of the head. Also, you want some serious reps. This is not an overnight bulking exercise that will put inches on your shoulders or neck. Military presses take a few weeks to start delivering results. Do them right, do them a lot and always, stand!
5. ...this remains a big challenge for me since it seems to challenge the back in a very different way [BTW - I am not the guy in the picture. These are snapshots from YouTube]. Backbends are not meant for first-time gym explorers. Get your conditioning up first.
6. ...pinched deadlifts is something I plan to try this week. Will update you about my first attempts. Looks doable but the stretch, the arch could be painful!