Complex sentence: Under the Government of General Mario Garcia Menocal was given the order to build the hospital for Militia and Families, at that time they began to replace the wood walls, improvised flooring and pavilions with concrete.
Split into simpler sentences: Under the government of General Mario Garcia Menocal, the order was given to build the hospital for militia and families. At that time, they began to replace the wood walls and improvised flooring and pavilions with concrete.