The background to forcs families has changed radically over the years.
When I was a child, 1940s,50s, we had a huge army, much of it conscription but a significant regular army as well. Families moved with the men from base to base. Every base had a range of furnished housing provided for these families and if demand exceeded supply, then you lived off base, but close to, in what were known as 'hirings' .
Postings were theoretically for three years, but you were lucky if you ever stayed in one place that long. My father's shortest posting was 6 weeks. Thankfully we hadn't yet moved, so did not have to move out of a quarter weeks after we had moved in. Most women did not work and were happy to follow the flag. Children under 11 went to local schools,when stationed in the uK and, usually schools for forces children when overseas.
At 11, if our parents were concerned about us getting a good education with O levels and A levels, they sent us to boarding school, so that we had consistency of education from 11 - 18. There was not any alternative as seen then.
Although I and the forces parted company at 21 when my father retired from the army, we have service friends, so have been aware of the changes that have happened.
It started in the early 1970s when house prices started rising regularly. Up to then army people did not own houses, they saved up through endowment policie and the like so that they had the cash to buy a house when they retired, but rapidly rising prices meant that servoce people started buying property. Buying and selling every time they moved was not practical so the decision was then rent it out, or live in it with the serving member commuting and living in Mess during the week.
Then as you got into the 1980s, more and more servicemen's wives had jobs, quite a number had professions and careers they were following and this meant travelling from base to base, country to country was no longer practical, so more and more forces famiys put down roots and began to lead more stable lives. When this happened there was no need to send children to boarding school and the forces only now subsidise families where it is clear that the family is following the job
But this also has downsides. It puts pressure on marriages, when one member may be working away, may be a long way away snd even coming home every weekend may be difficult. It also puts pressure on the children who have a full time mother and only an occasional father, who misses all lifes big occasions from first steps, first teeth to first degree.
We could of course have an army of single people only, or single people only and those with grown up children, but, I am not sure that is either practical or possible.