Inspired by Marks 'Clash of Spears' and Simons 'Hydaspes' games, I thought I'd take another look at the One Hour Ancients rules and backport some of the elements from my well tested WW2 variant onto them. I was also keen to persevere with the use of grids, as my favourite Ancients rules (Lost Battles and CnC Ancients) both use a grid to good effect and restrict some of the very silly wargamerish moves people like to pull with Ancient armies as if they were tank formations all under gps controlled command.
The easiest thing was retrofitting the 1/2/3 dice and six hit combat system as it maps onto the standard D6 plus or minus two system precisely. The harder bit was geometry as I didn't want a 9x9 or, heaven forfend, a 12x12 playing area. 6x6 requires some careful handling to replicate some of the subtlety of the ruler based rules in terms of the relative mobility of the various unit types. I got something workabe in the end, mainly by borrowing very heavily from the troop types and move restrictions. Good luck trying to get your heavy infantry to turn on a sixpence now!
I wanted an asymmetrical playtest scenario, and funnily the next one of my list of CnC Ancients games was Cannae, as asymmetrical as you can get with a nice range of troop types but nothing silly like elephants or flaming pigs. It wasn't too hard to convert the Lost Battles OB and deployment into something vaguely approaching a OHW scenario, and I borrowed the CnC Ancients 'victory banner' concept to avoid it being just a boring battle of annihilation.
After a couple of run throughs with both sides achieving victory (as Hannibal was heavily outnumbered Cannae was always a slightly dicey proposition for him), it was time to try it out on the long suffering members of Sheffield Wargames Society!