Who led the first company as the mid-range force in the fourth great ninja war?

The answer is Darui.

The first company as the mid-range force in the fourth great ninja war was led by Darui.

The fourth great ninja war is also known as the Great Shinobi World War.

Darui himself was a Shinobi of Kumogakure clan. Darui is a Naruto character affiliated with Allied Shinobi Forces and Kumogakure.

Darui, it should be noted is a fictional character and all wars described above are of a fictional nature, not historical.