Complex sentence: General Topacio was the military engineer of the Katipunan secret society and was among the first Katipunan members to urge Supremo Andres Bonifacio to wage a revolution against Spain.
Split into simpler sentences: General Topacio was the military engineer of the Katipunan secret society. Known to be amongst the first Katipunan members to urge Supremo Andres Bonifacio to wage a revolution against Spain.