No. It's not normal for a state's military to keep track of men like that.
Also, it's super sexist! Women serve in the military too. Why do they get to travel for as long as they want without having to register?
I want to know how this could even be practical. Are there that many German men spending 3+ months abroad that it's actually important to know where they are at all times?
"Oh shit! We need more men, specifically, in our military right the fuck now! Good thing we're keeping a weirdly detailed travel record of these (some stupidly small number in a nation of ~84 million), not-even-in-the-military dudes because... ???"
Don't use FTP!
SFTP 👍