M3 Stuart

The M3 Stuart is officially known as the Light Tank M3 in the United States. By the standards of the time, the Light Tank M3 gets classed as a heavily armored light tank with a 37 mm M5 gun and five .30-06 Browning M1919A4 machine guns, among others.

 Though built by the Americans, it was initially deployed to war for use by the British Army, becoming the first American tank adopted by the Brits.

M3 is quite a highly reliable tank, and this made it quite popular among soldiers. However, the Light Tank M3’s armor and firepower were quickly outmatched, leading to its deployment for reconnaissance missions instead of outright battle. The Light Tank M3 deserves a place on this list, as it proved quite useful and very efficient in its secondary role, and served until the end of the war.

Tank MK  IV

The Churchill tank, named after Britain's leader of the time, faced an uncertain development due to a misguided philosophy on what a tank should be prior to the key battles of WWII. Nevertheless, the Churchill turned out to be one the best tanks in WW2. 

While its earlier variants were rather inadequate until 1943, the MK IV Churchill would change that, retaining all the good points of the tank and improving on its deficiencies, namely an inferior cannon. Now armed with a 75 mm cannon and thicker, more advanced armor, the MK IV Churchill was a force none could ignore. Incredibly rugged, capable of crossing almost any terrain, and powerfully armed and armored, the slow but mighty this tank saw service in British army until 1950 years. 

Sherman 

While the early Shermans proved themselves a fearful force on the battlefield, they lacked in certain areas, namely their cannon's armor penetration against heavy tanks like Tiger and Panther. and Panther. One of the final Sherman upgrades deployed during WWII that addressed this shortcoming was the fearsome ,,Easy 8,, M4A3E8 Sherman.

This new generation of Sherman got revised with a new and more powerful engine allowing for higher speeds, thicker hull armor, advanced new suspension and wider tracks for proper all-terrain capabilities, and most importantly – an armor-shredding high-velocity 76 mm cannon. All of this combined transformed the Sherman from a reliable workhorse into a proper monster, feared on the battlefield during the final stages of WWII.