JJ
You will recieve money into your B fund when you return for the credit hours you would have flown will on mil leave. I did a year of mil leave and recieved a nice big deposit into my vanguard account roughly 2 months after coming back. The people at vanguard know what its based on. You will not accure leave while out. I strongly suggest talking to our outstanding union Mil rep. he has great info and can help you out. There is some grivence issues filed and won regarding this issue. SM can help you out. PM me if I can help also.
TB