Is it an option on the balance.Sorry to resurrect this zombie of a thread, but I'm looking at SBR 2 for BFP92 Trenches in Flames, which reads (in part), "No Fortifications may set up HIP [EXC: Mines if the option is used]". There aren't any mines in either the Russian or German OBs. What am I missing? I did check the BFP errata page but I didn't read through this entire thread, nor do I have CoS v2. My apologies if this has been addressed earlier.