Enlistment - Rec. Schneider

Read the enlistment details at:

https://personnel.29th.org/#enlistments/13880

Unfortunately, we will have to deny your application due to the 29th’s exclusivity policy. However, should you no longer be a part of Panzergrenadierbatallion 322 in the future, please feel free to re-enlist.

Dear Recruiter, I have come to notice that you mentioned an: ,Exclusive Policy". Due to me not finding that exact policy (or any rule which would apply in my case) would it be possible if I could get directed to a Rule site regarding that toppic? (A link or a Rule’s Position in the rule book would be perfect)
Would be thankful
-Max Schneider

@Cowles