Please capitalize where necessary: es_es (spanish, as spoken in spain)
A: es_ES (Spanish, as spoken in Spain)

Please capitalize where necessary: construct the rocket, fill it with fuel and go to the next level!
A: Construct the rocket, fill it with fuel and go to the next level!

Please capitalize where necessary: allowing your employees use their own devices, tablets, smartphones and even computers to access corporate data and applications can increase their productivity, efficiency and flexibility.
A: Allowing your employees use their own devices, tablets, smartphones and even computers to access corporate data and applications can increase their productivity, efficiency and flexibility.

Please capitalize where necessary: in around 1864 rosse sought a tutor for his three sons, and ball was recommended to him for the post.
A:
In around 1864 Rosse sought a tutor for his three sons, and Ball was recommended to him for the post.