ok - with sn/ sen, they are really going to have to get a grip of passporting instead of statements. sce schools in germany effectively are their own lea so stat assessment in situ is possible. obv issues with moving sn/sen if statemented as new la usually choose to re-assess, which means starting at the bottom of waiting lists etc (unless you are dead canny) . i would be suggesting that (sce) schools where sn/sen esp statemented pupils are moving on, get really involved with smoothing this process for families. it's above and beyond, generally, but at the very least families should be walked through how to make transitions easier and referred to aff sn rep who can provide lots of useful guidance. (also worth you checking out the aff website...) as far in advance as you can!!!
even for non-sn kids, this is crucial. we always miss application deadlines for schools, are always told we can't apply for a school place until we have a new address, and tbh finding children schools is one of the most stressful parts of moving (and i do have a child with a statement lol - although it's not recognised here as we are an iso-det - so she will have to be re-assessed if/ when we go back to uk).
second the buddy system. generally speaking, 50% of the school will change every year, in every year group. that's a lot of change lol! some parents will let you know months in advance, some will disappear overnight, some will appear overnight (lol). you will have therefore 50% of parents telling you that johnny did that last year, or conversely, johnny has never been taught that. you might want to develop the hide of a rhino
there has been lots of research on deployment effects - sometimes schools have really good systems of dealing, some don't. if it's a unit deployment, the schools are usually fairly good (ideas as described above) but the unit themselves often lays on additional welfare type stuff which the school should be aware of. for lone deployments it's trickier, you need to be very up on whose family is approaching a period of separation/ who's away/ who's coming back etc.
oh, and last but not least (this is very important ) never put a four year old on the wrong school bus to get home on his first ever day at school... (an sce classic)
his mother will be at school to greet you personally the very next morning, and will not be any calmer than she was the night before when everyone else's kid got off the bus and hers didn't...
oh, and you should also probably know that sce teachers are usually called 'screechers'... and are generally expected to marry someone from the officer's mess at the first available opportunity...