Single Comment

How many Armies? Add Immortal AntiClericals and about two dozen others since, doubling the list by Peter Hatch a decade ago of the first twenty:
http://www.chessvariants.org/index/displaycomment.php?commentid=595. Peter Hatch invented different armies for 10x10 in Fantasy Grand and contributed ideas to Betza's C.D.A.
Now Immortal AntiClericals replace Bishops with Barrier Pawn and Immortal Man, who move neutrally exactly the same as each other, as if they were the very same piece-type for 80% of moving cases, excluding the rest of capture/captured minority, the lesser 20% of moves recordable: the observed outcome units valued 0.5 and 5.5. Still, uneasiness to the C.D.A. theme of usually strict paired substitutes is being understandable. Therefore, furthering the symmetry of the two here replacing the Black and the White  Bishop, let's add necessary subvariant where Barrier Pawn promotes to Immortal Man and vice versa Immortal Man to Barrier Pawn(then I.M. will tend to avoid rank 8).  That modality in toto for the tandem in new themed C.D.A., Immortal 
AntiClericals, RNIQKbNR, is creating more alike a piece-type pair, to go with N-N and R-R than the two Bishops themselves of long standing are across the board in the orthodox F.F. -- looking at the single match-up Immortal AntiClericals versus Fabulous F.I.D.E. Two opposite Bishops are really supposed same piece-type only by convention. That is of course because Bishops Dark and Light actually never reach or threaten any same square, in contrast to Rook/Rook and Knight/Knight and contrast to these particular replacements and in contrast to any genuine fully same-types. 
Anyway for one example, Amontillado, http://chessvariants.org/dpieces.dir/amontillado.html, does not follow the structure most assume and Charles Gilman describes. Betza would immediately endorse without reservation Immortal AntiClericals too -- with or without subvariants -- delighted to see development in the Chess form he sought to supplant standard fixed-array 64 squares not too distantly. 
Http://www.chessvariants.org/index/displaycomment.php?commentid=614.