Complex sentence: The army was to consist of 13,200 men in 8 Infantry Regiments of 1,650 men, six of the regiments were organized in 3 Brigades of 2 Regiments and put under the command of a Chinese Major General and a Japanese advisor.
Split into simpler sentences: The army was to consist of 13,200 men in eight infantry regiments of 1,650 men each. Six of the regiments were organized in three brigades of two regiments each and put under the command of a Chinese Major General and a Japanese advisor.