Complex sentence: Many DAF aircraft were unserviceable and the effort for the day was much reduced but two Hurricanes dropped medical supplies; diversions attempted by columns from the 7th Motor Brigade and the 29th Indian Infantry Brigade were too small to have much effect.
Split into simpler sentences: Many DAF aircraft were unserviceable and the effort for the day was much reduced but two Hurricanes dropped medical supplies. Diversions attempted by columns from the 7th Motor Brigade and the 29th Indian Infantry Brigade were too small to have much effect.