From a practical, training and readiness standpoint, rotating combat effective equipment and personnel through an active space patrol makes sense - everyone gets regular practice and experience, without the burnout risk of long service, and time and facilities to perform major equipment maintainance. As a militia style service it would be far more uneven than regulars, but with handwavium in the equasion that's kind of a given anyway, hence the 'danes distrust of it.
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows