I think he means a standing command, so that they form rows first thing, without having to order them. Would be nice, especially for battles with lots of cavalry.
i Have played warband for a few weeks now, and there are mods etc to stop the charging there, i would think its a simple tweak to stop this happening, like brxbrx says
Yeah, your soldiers charging as soon as the battle starts is dumb. They should wait for orders by default, or have standing orders you can set before battle.
I believe there is a mod called "Pre-battle orders and deployment" which lets you choose and queue starting orders for your troops
Check the released mods thread.