It still can be used to ping targets as a rangefinding help. The small calibre of the Vickers machine gun makes it largely ineffective against all armoured vehicles but the ones with an open compartment. Main article: Vickers (7.7 mm) 7.7 mm Vickers Main article: QF 17-pounder (76 mm) 76 mm QF 17-pounder
This is obvious with the extreme slope on the from of the tank, and turret design. The AC IV Thunderbolt's armour have a high tendency to bounce shells.
H EROGAME SERIAL
The tank in the game is the version planned for serial production, so it has the hull of the AC III unlike the actual prototype design developed, which used the hull from the AC I version. The addition of the 17-pounder gun also gives this tank a whopping high firepower for the size, so it can stand a chance against tanks of the same tier despite being out of the league in terms of armour. The tank has a great advantage of a decent reverse speed in comparison to other medium tanks of its calibre, with a reverse speed almost the same speed as forward. The Sentinel also has a good manoeuvrability and power-to-weight ratio for the propulsion, able to accelerate to its max speed of roughly 30 km/h quickly and stay there on stable terrain. The AC IV is a relatively small medium tank in comparison to the common mainstay of the other countries, especially when compared to the American Sherman tanks. The Thunderbolt is also a small and manoeuvrable tank able to exploit harsh terrain to target the enemy. Armed with a 17-pounder gun, it has a high firepower for the battle rating it is in, able to effectively fight any other tanks at the battle rating.
H EROGAME UPDATE
It was released some time after Update 1.55 "Royal Armour". Mark IV, also known as the AC IV Thunderbolt or the AC IV Sentinel, is a premium rank III British medium tank