How many of those improved Sherman DD tanks were used after D-Day?
After D day the tanks were used in other operations but i dont know how many maybe this would hep
Operation Dragoon
The Operation Dragoon landings took place on 15 August 1944. The invasion took place between Toulon and Cannes.
A total of 36 DD-tanks were used by three American tank battalions - the 191st, the 753rd and the 756th.[2] The 756th battalion had eight tanks that were launched 2,500 yards (2,286 m) from the beaches; one was swamped by the bow-wave of a landing craft and one sank after striking an underwater obstacle. The twelve tanks of the 191st battalion were all landed on or close to the beach. The 753rd battalion had 16 tanks, of which eight were launched at sea and successfully reached the shore and eight were landed directly on the beach later in the day.
[edit] North West Europe
Sherman DD tanks crossing the Rhine, 24 March 1945The Staffordshire Yeomanry were converted to DD tanks after D-Day and trained with them in Belgium. On the 26th of October 1944, they undertook a 7-mile (11 km) swim across the Western Scheldt to attack South Beveland, during the Battle of the Scheldt. The DD Tanks' longest operational water crossing took place without casualties, but the tanks had great difficulty in landing - 14 became bogged down in mud and only four were available for action.[13]
Operation Plunder, the crossed the Rhine, began on the night of the 23rd of March, 1945. As well as the Staffordshire Yeomanry, DD tanks equipped the American 736th and 738th Tank Battalions and the British 44th Royal Tank Regiment. Some tanks were lost in the river, but the crossings were considered a success. The tanks were launched from points upstream from their objectives, to take account of the Rhine's strong current, and mats at the objective points (carried across beforehand by LVTs) allowed the DDs to climb the steep, muddy banks of the river[13].
The DD's last combat, swimming operation was the Staffordshire Yeomanry's crossing of the River Elbe at Artlenburg on the 29th of April 1945[13].
[edit] Italian Campaign
By February 1945, the 7th Queen's Own Hussars in Italy had been trained an equipped with DD tanks, both DD Shermans and DD Valentines. DD Shermans were successfully used in the crossing of the Po River on the 24th of April. On the 28th of April, those tanks still able to swim were used in an assault across the River Adige. During this operation, Valentine DDs were used to transport fuel (their only know use on active service). The tanks continued to be used in combat in the advance towards Venice. There were no further swimming operations, but it was found that the folded flotation screen offered a large seating area, that made the tanks useful troop transports
