Changes

*'''539.931.[[M41]]''': shortly after its formation, the regiment earns its first battle honours, successfully preventing the [[Tau]] from annexing an Imperial world during the [[Gravalax Incident]].*___'''932.M41''': the regiment is deployed to [[Simia Orichalcae]] to defend a vital [[promethium]] refinery from an incoming [[M41Ork]] [[Waaagh!]].*'''___.M41''': The 597th is deployed to [[Periremunda]] to fight against an incoming a [[Tyranid]] invasion.*'''937.M41''': The 597th is deployed to [[Adumbria]], alongside the [[Tallarn Desert Raiders#Notable Tallarn Infantry Regiments|Tallarn 229th]] and a [[Valhallan]] artillery regiment, to repel the [[Chaos]] warband known as the [[Ravagers (Warband)|Ravagers]].