Divide and Conquer is the biggest Third Age total War submod of all time. Finally released after years of hard work. It contains tons of new factions, units, scripts, 2d and more!
Second patch for Divide and Conquer Public Beta. DOES NOT REQUIRE PATCH 1 AND CONTAINS ALL WORK INCLUDED IN PATCH 1.
Ensure you have installed the main beta 0.1 submod correctly first!
Run the installer provided as administrator, making sure that the installer installs to the Medieval II Total War/mods/Third_Age_3 folder.
It really is that simple but for Steam and a more detailed explanation see this link (Scroll own to the Divide and Conquer section below the MOS section)