WhenSaat [[InvasionInvasi of Poland (1939)Polandia|GermanyKampanye invadedPolandia Poland]] onpada 1awal September 1939, itskorps armored corpstank wasjerman composedterdiri ofatas 1,445 Panzer IsI, 1,223 Panzer IIsII, 98 Panzer IIIsIII and 211 Panzer IVsIV; thekendaraan morelapis baja modern vehicleshanya amounted to less thansekitar 10% ofsaja Germany'sdari armoredtotal strengthkeselurah korps [[Wehrmacht]].<ref>Perrett (1999), p. 24</ref> The[[1sttiap Divisi Panzer Division (Wehrmacht)|1stPanzerpasti Division]]dilengkapi had a roughly equal balance of types, witholeh 17 unit [[Panzer IsI]], 18 unit [[Panzer IIsII]], 28 [[Panzer IIIsIII]], and 14 [[Panzer IVsIV]] per battalion-nya. TheNamun remainingkarena panzerfungsi divisionssebenarnya werePanzer heavyIV withbelum obsoletebenar-benar models,di equippedpakai asmaka theybanyak weretank-tank withringan 34hancur Panzerbukan Is,karena 33Tank Panzervs IIs,Tank 5tapi Panzerdengan IIIs,senjata and 6 Panzer IVs per battalion.<ref>Perrett (1998)Anti-Tank, p.Polandia 37</ref>sendiri Althoughmeng-klaim thetelah Polish army possessed less thanmeng-penetrasikan 200 tanks capable of penetrating the German light tanks, Polish anti-tank gunskelas provedringan moredi of a threat, reinforcing German faith in the value of the close-support Panzer IVpolandia.<ref>Perrett(1999), p. 33</ref>
[[File:Crusadertankandgermantank.jpg|thumb|right|A British [[Crusader tank]] passing a burning German Panzer IV during [[Operation Crusader|Operation ''Crusader'']], late 1941.]]
