Page 13 : "The last version, the Trache 6, proved to be one of the heroes of the Euro Wars and is still available through an Ares Arms refurbishment program."
"Trache" is not, as far as I can tell, a word that has a meaning in this context, while "tranche" is French military jargon, with the same use than "Block" in English. Check the intending meaning with the author.