Interesting. I was just about to comment that ModernGui already has a very similar function to distribute your Farmer equally among multiple Fields. It seems that mod got it from the above mod. Would be great to some sort of "Spread evenly" functionality in the base game.

Agreed How it should be: Units with swords, axes, or other edged weapons (arrow edges don’t count) deal Hack damage. Units with spears, arrows, pikes, and other tipped weapons (maybe some swords can count, but probably not given no thrusting animations) deal Pierce damage. Units with maces, staffs, or blunt weapons of any type deal Crush damage. Resistance balance should be redesigned, with Pierce and Crush resistance being about equal, while Hack remains slightly lower than them.

You are overwriting a player command for something maybe he doesn't want to do thoughts.. Maybe you can check Field Manager from @Mentula that added a command panel for farms with useful buttons.

Do they represent the bulk of each civilization's army? More of less randomly chosen among all Citizen Soldier units created for each Civ?

Would be a great first patch for someone willing to contribute to 0 AD