Here are some suggestions for your Ground PvP build in Miltiades:

For a build that focuses on ground attacks, HP, and speed, you'll want to prioritize the following skill books and equipment refines:

Skill Books:

Lvl 4 Ground Troop Attack – Ground Attack +25%

Lvl 4 Ground Troop HP – Ground HP +25%

Lvl 4 Ground Troop Speed – Ground Speed +20%

Equipment Refines:

Sword – Ground Troop Attack % x4

Armor – Ground Troop Defence % x4

Boots – Ground Troop Defence % x4

Helmet – Ground Troop HP % x4

Leg Armor – Ground Troop HP % x4

Ring – Ground Troop Attack % x4