As far as I know GER didn't have any frogmen as such but they spent a lot of effort developing a range of one and two man subs and these saw action late in the war. ENG had the Special Boat Service and the X Craft of Tirpitz fame, and the USA had underwater demolition units but I'm not sure if it had any group that quite parallelled the offensive operations of the Italians, Germans, and Brits. To my knowledge FRA never really had the chance to develop anything in this area.
As far as heavy tank battalions go you'd first have to have heavy tanks. Russia had the KVs from 1941 and Germany the Tiger from 1942, but Britain and the US lagged in this area. The Brits had the TOG which was trialed in various forms through to 1943 but never went into production while the Americans trialed a series of developments of the M26 Pershing that they first termed 'heavy' tanks but which were later re-classified as 'mediums'. The first genuine US heavy tank seems to have been the T29 but only a dozen of these had been produced - as pilot models - by the end of 1947. Again, France didn't have a chance to get into the act until the war was well over, but the Char B series were thought of as heavy tanks when first produced in 1935.