[quote=@POOHEAD189]
[@Karos]
On that note, I recommend this book. The average lifespan on the planet in the novel is 15 hours. 
[img]https://images-na.ssl-images-amazon.com/images/I/51IoqQZPDrL.jpg[/img]
[/quote]

Yeah. Regiments of Guardsmen are also raised on the same planet and seldom would receive reinforcements. The amount of time and resources it'd take to reinforce and mix regiments with soldiers from other planets and systems is illogical.