Another military wife and daughter here. I have done the weekending for 4 years at a stretch when ds was younger, so that I could have a job and he could be in one place for prep school.
Dh then got posted abroad. We did two years of trying to weekend from Brussels to Cornwall. There were no flights, so it was Eurostar and train or driving. The journey took twelve hours door to door depending on traffic; it could take more. There was no help (gyh) from Brussels, so we picked up the travelling costs. Not cheap.
We tried to see each other every three weeks; it ended up being every six with me travelling out at half terms and dh getting home once in a blue moon for a weekend, and coming home at Christmas and in the summer. It didn't help our relationship, and ds didn't really know his Dad, as he had spent 50% of his (ds's) life weekending or in Brussels.
I threw in the towel and moved to Brussels. Ds goes to school here.
From September next year ds will board for sixth form. We are out here until late 2013, which is the first term of year 13. We have thought about this long and hard, and ds agrees that he needs to be in one place and that it will provide a half way house between home and uni. We don't know what the future holds jobwise for dh, so continuity for ds is important.
I do not want to spend another 17 months only seeing dh every six weeks, and as there are no teaching jobs in my subject area where I live as of yesterday, my options are limited.
As a military daughter, I know it put a strain on my parents when I went to comp and Mum stayed in one place, especially when O levels loomed.
It is all very well imagining what you do in the situation many military families find themselves in, but the reality is bloody tough and sometimes the choices are a bad choice or a worse one. Having now done the military wife thing for 25 years, and having been around the military for 45 years as a daughter and a sister, I do have some experience and have seen it from all sides. The families make the best choices they can for them at the time based on the limited information available to them at that moment.