Complex sentence: On 31 May, the fifty supply trucks of the 101st Motorized Company of "Captaine" Dulau, eventually reached Bir Hakeim with water and on its return took the Indians, prisoners and seriously wounded back to Allied lines.
Split into simpler sentences: On 31 May, the 50 resupplying trucks of the 101st Motorized Company of "Captaine" Dulau eventually reached Bir Hakeim with its water cargo. On its return, the convoy took the Indians, the prisoners, and the heavily wounded back to Allied lines.