Not that I know of. The rear drive sprocket may have created some problems [final drive and transmission for the Shermans and M5s was up front] and since the Pershing was built for killing German heavy armor, it may have been deemed unnecessary in the first wave, since 75/76/105 howitzer gun Shermans were available for dealing with beach positions,[as well as dozer tanks] and 17-pounder equipped *firefly* Shermans were attached to the Utah beach units for dealing with enemy tanks head-on.
So far as that goes, I've never seen a pic of a DD Sherman with a 17-pounder gun, either. I think the LSTs dropped them on the beach.
At Utah beach, the 70th tank battalion launched its DDs from about 1500 yards out. Four had been lost when their LCT hit a mine, but the remaining 28 DDs made it to the beach, about 10 minutes after the first infantry waves hit.
At Omaha, things went bad even before dawn. Two LCTs, carrying 8 deep wading M4s, hit mines and went down. The winds were blowing at 18 knots, and waves were 4�6 feet high. Because of tides and geography, landing conditions were far worse at Omaha than at the other beaches. Unfortunately the US Army thought they were in charge of the launch decision. Things turned into a disaster when someone decided to start launching the 741st DDs from 5500 yards out, and this was the birth of the myth of the US DDs on D-Day. Company C lost 16 of 16 DDs launched, almost all within 1000 yards from the launch. It seems a majority, if not most, of the tankers were recovered. Company B launched nearer the beach and two of its DDs made it all the way in. Three more DDs were landed directly on the beach by their LCT after the first tank sank, and the shrouds of the remaining tanks were damaged. A total of 5 DDs, 6 waders and 5 dozer tanks of the 741st made it ashore, 16 out of a total 56. The 743rd on Omaha made out better when it was decided to land all of its tanks, including DDs, directly on the beach from the LCTs. 32 DDs, 7 waders and 3 dozers made it ashore, 42 out of 56. Of the 112 tanks destined for the assault on Omaha Beach, 58 made it ashore, but only two DDs swam ashore. These 58 tanks were crucial in finally winning the day, providing much need support. By the end of the day, 42 were still in action, but only three from the 741st.
At 0630 on 6 June, 1944, after 18 months of training in secret, the 70th Tank Battalion rolled off of their landing crafts and onto Utah beach with the 4th Infantry Division. One of the first of the 70th Tank's soldiers to make it on the French shore was LT Franklin Anderson and his team of radiomen and engineers. Anderson was wounded by shrapnel after leaving the landing craft but made it to the seawall and directed the engineers as they blew holes in the wall for dozer tanks to enlarge.
Although A and B Companies were supposed to have been in the first wave, due to a mix up in the rendezvous area, the first tank on shore was commanded by PFC Owen Gavigan of C Company. C Company arrived with 12 of its 16 tanks and, under artillery and rocket fire, cleared obstacles with HE and bull dozer attachments and took key gun emplacements under fire, allowing follow-on ships filled with troops and supplies to make it to the beach. A Company was not so lucky. Before the tankers could disembark, one of the LCTs hit a mine and was blown in two. Nineteen tankers of the twenty on board died. As the rest of A Company's tanks hit the beach, they took up firing positions where they could support the infantry that were landing behind them. Two more tankers died during this operation, but the infantry landed safely.
70th Tank battalion engineers blew the seawall in front of B Company as their tanks hit the beach, but they met little resistance other than dismounted Germans exiting a bombed-out pillbox. All 16 of their tanks landed safely and moved through the breach made by the engineers and secured the causeway leading off the beach.
D Company, equipped with light tanks, was assigned the mission of linking up with the 101st Airborne Division which had landed behind the enemy defenses during the night. D Company found the infantry broken up into small groups under pressure from pockets of German resistance. By the end of the day, D Company had found large elements of the 101st and consolidated for the next morning's attack.
By nightfall, all the companies of the 70th Tank Battalion had reached their objectives and had consolidated the Utah beachhead.
The battalion fought its way north toward Cherbourg, at the head of the Cotentin Peninsula. C Company broke through to the 82nd Airborne at Ste. Mere Eglise on 8 June 1944, and the battalion continued north, cleaning up pockets of resistance along the road north. The tankers fought continuously for days on end, doggedly clearing the last German resistance. The town of Azeville fell on 11 June. Montebourg followed on 19 June. Cherbourg itself was not taken until 26 June, three weeks of exhaustive combat after the D-Day invasion.
The 70th Tank's losses during D-Day were the largest for any single day in the war. During the "Longest Day", they had lost 16 tanks, with 22 men killed and 8 wounded. By the time the Eighth Infantry Regiment had cleared the Cotentin Peninsula, the number of lost tanks had grown to 32, with 29 men KIA, 31 MIA and 48 WIA. The 70th Armor Battalion earned another Invasion Arrowhead and a Presidential Unit Citation for its critical role in the invasion of Normandy. 
