it was a farm tractor. The Panzer II was around 50% heavier than the I and added a 20 mm Solothurn cannon as main armament as well as increasing maximum armour to 30 mm. Production began in 1935, but it took another eighteen months for the first combat-ready tank to be delivered. It was also sent to Spain from 1937, and the Panzer II proved more capable against light infantry, but no better when faced with capable anti-tank guns or other tanks. Despite these weaknesses production continued until 1941, at the outbreak of war the German Army had 955 PzKpfw IIs and almost 4,000 were built in total. The Panzer II was designed before the experience of the Spanish Civil War showed that shell-proof armor was required for tanks to survive on a modern battlefield as prior to that, armor was designed to stop machine gun fire and shell fragments. Production began in 1935, and by July 1937, the Panzer II was cleared and ready for production and by 1939, some 1,226 Panzer IIs were in circulation. While the Panzer I proved the spearhead of these initial invasion assaults, the Panzer II formed the backbone of such early forays. The plan was to produce a better-armed and armored version of a light tank to shore up the limitations of the Panzer I as well as provide priceless training to tank crews. Underpowered, under-armored and lightly armed, the Panzer II experienced its hardships particularly against anti-tank weaponry at close ranges. Nevertheless, war was on the horizon so time was of the essence and the more lethal Panzer IIIs and Panzer IVs were being developed and soon be mass-produced for the coming battles. World War II The multi-turreted heavy tank Neubaufahrzeuge prototypes were used mainly for propaganda before the war and their role was extended with the German invasion of Norway, when a special Panzerabteilung was formed which took the three armored prototypes with them to Oslo. They saw some combat there, with one being blown up by German engineers when it got stuck in swamps near Åndalsnes. The other prototypes were eventually scrapped. During the war, German tank design went through at least three generations, plus constant minor variations. The first generation included such unbattleworthy prewar vehicles as the Panzer I and II, which were similar to the Russian T-26 and T series and to the British cruiser tanks. Panzer II