I'm just finishing off an Aedui game at the moment and I've beaten the Romani and Sweboz back to a point where they don't pose much of a threat any more.

This got me thinking about where people stop expanding. Do you go for bottlenecks, like the Bosphorus, or continue to expand on all fronts evenly?

Personally I find it difficult to concentrate on more than one front at any time, so I normally try to anchor the others at some strategic point while pushing forward.

I generally try to work towards my victory conditions and only go beyond these if I can shorten my borders by doing so.

Frontier garrisons are usually made up of whatever troops I can recruit from that city, plus four slingers to whittle down any besieging stacks. This approach has stood me in good stead in Italy where I've been constantly attacked by Romani stacks full of Pedites Extraordinarii and Triarii.