Parachute Battalions MMG's

I recently spoke with the son of a 3rd Parachute Battalion soldier who was at Arnhem in 1944 and he related that his late father was a Vickers machine gunner possibly attached to 8 Platoon of C Company. My first thought was shouldn't be have been in Support Company in the MMG Platoon? I then looked in the book 'Who was Who' which gives the order of battle for the 1st Airborne Division at Arnhem. In my (1992) edition 3rd Battalion did not have a MMG platoon in Support Company but all the other 5 parachute battalions at Arnhem did have one. Does anyone know a reason for this?
Why were the Vickers farmed out to the rifle companies? I'd have thought it would have been a 'heavy carry' for the men involved, never mind all the extra ammo required.....or were they allocated one of the scarce jeeps?

 

Medic just checked my who's who 96 edition and there is mmg pltn commander LT m.j dickinson shown in hq coy 3 para.

 

That solves it then..as I said I have the 1992 version of Who was Who.....must have a word with Chris van R......