Complex sentence: In 1958, the squadron was expanded to a regiment Attygalle was appointed as its first Commanding Officer in the rank of Lieutenant Colonel, the 1st Reconnaissance Regiment became the core of the Ceylon Armoured Corps.
Split into simpler sentences: In 1958, the squadron was expanded to a regiment and Attygalle was appointed as its first Commanding Officer with the rank of Lieutenant Colonel. The 1st Reconnaissance Regiment became the core of the Ceylon Armoured Corps.