During WW2, it could not have escaped the attention of the Swissmilitary that a method of defence against increasingly heavily armoured foreigntanks was going to be required. The current inventory of Swiss tanks at thetime was very modest – although there were stocks of antitank guns, the needfor ‘a(chǎn) big gun on some track’, to paraphrase Winston Churchill, was apparent.

　　二戰(zhàn)期間，瑞士政府不可能不注意到利用防御才是對(duì)付國(guó)外越來越重型的坦克最好的方法。那個(gè)時(shí)候的瑞士坦克設(shè)計(jì)非常平庸，盡管他們手頭有大量反坦克炮，但是對(duì)更大的炮的需求，用丘吉爾的話來說，是顯而易見的。

　　In 1944, the Swiss used one of the Pz.39 tanks they had, whichwas fitted with a Swiss built Saurer CT-1D 125bhp diesel engine and theyinstalled a 75mm cannon. A 105mm HB42 was also mounted experimentally. Thisvehicle was called the Nahkampf-Kanone (NK-1)

　　1944年，瑞士利用手頭上的Pz.39，裝上一臺(tái)瑞士產(chǎn)蘇拉CT-10125馬力引擎與一門75mm加農(nóng)炮，還試驗(yàn)性的裝上了105mmHB42炮，被稱作Nahkampf-Kanone (NK-1)

　　NK-I 75mm炮型

　　NK-I 105mm炮型

　　A better vehicle was still desired, improved with an enclosedsuperstructure to protect the crew, better armour, a more powerful engine and alarger, sturdier chassis. In 1945, the Nahkampf-Kanone (NK-II) version camewith a Saurer CVDM V12 300hp Diesel engine. The upper structure was a verylarge casting and has a good ballistic shape. The NK-II was also fitted with a 75mmand at some point it was tested with a 105mm gun.

　　但是瑞士人還想要一部更好的坦克---有封閉戰(zhàn)斗室以保護(hù)乘員，更好的裝甲，更強(qiáng)勁的引擎以及更大更結(jié)實(shí)的車體。于是在1945年出現(xiàn)了裝備蘇拉CVDMV12 300馬力柴油引擎的NK-II型。上層大部分為鑄造結(jié)構(gòu)，具有很好的防彈外形。同樣裝備75mm炮，并在某個(gè)時(shí)間換裝了105mm炮進(jìn)行測(cè)試。

　　NK-II