A contact in UK has identified the 5th Battalion, Queen's Own Royal West Kent Regiment, as an element of the 21st Indian Infantry Brigade, which in turn was an element of the 8th Indian Infantry Division.
In its advance towards the Arno River, 21st Brigade was assigned to provide a diversionary thrust toward the River Pisa, beginning on 27 July 44.
Your 5th Royal West Kents advanced from the Fiano area at 6:30 AM on 27 Jul 44, and passed through Montespertoli, mounted on tanks of 12th Canadian Armoured Regiment.
By 7.00 PM, the area of San Donato had been reached, and the battalion hdq. had been established near the church.
By this time the battalion was within 2.5 miles of Monteluppii and the Arno.
During the night, the battalion was shelled heavily, resulting in 16 casualties.
It appears that the battalion remained in the area, for the 21st Brigade confined its activities to patrolling throughout the 28th and 29th July.
We would assume that your uncle died the night of the 27/28th during the heavy German shelling at San Donato.
My friend lists the following reference:
Official History of the Indian Armed Forces in the Second World War: The Campaign in Italy, 1943 - 45.
I'd like to try to identify the German elements involved in the action at San Donato. Without charge, of course. OK?