The Tony Bath Rules
They have been described by Kevin Large as "not intended for aggressive competitive play, but for a fast moving enjoyable game".
The earliest version that survives is the version in Donald Featherstone's book, War Games. Phil Barker claimed this version to be his "second favorite" ancients ruleset but considered the ruleset to have lost some of its appeal as later versions became more complex.
The rules were written to be played with flats (thin model soldiers, virtually two dimensional) and when solid figures became dominant he was slow to adapt the rules as he had written them first of all for his personal use. Some see this as a key reason that other rule sets became dominant. This is, however, disputed by others on the grounds that the Bath rules continued to be played extensively for a time after flats had been made obsolete by solids.
He wrote a version of his rules designed for solid figures which was published as "Peltast and Pila" in 1976. In those rules, Tony Bath did adapt to the trends of rules of the time while still keeping his basic style. In the tradeoff between historical accuracy and playability, Phil Barker considered Tony Bath to have firmly chosen the side of playability. The basing was compatible with the frontages of WRG of that time though differed slightly in respect of base depth. The rules for terrain were especially detailed as were the rules for street fighting.
The rules mixed dicing for groups to inflict hits along with individual saving throws to decide how many hits became kills.
Tony Bath wrote an extension to his rules to cover naval warfare which was published as a supplement to the Society of Ancients Rules in 1968 and also appears in Donald Featherstone's Naval Wargames.