in 1962 the Bundeswehr to replace its fleet of vehicles. which still stemmed tfsm the time the amy had been founded. it wanted amphibious two•, three• and four-ax Ie vehicles in ills 4 to 10 Ion payload rsnge. Because a high deg‹ee of new development was necessary. tha Germ an federal agency for defence iachno1ogy and pfocuremant [ BundeBamt fur Wahnachnik und BeBchaffung, BWB} found itBall unable to acoeot me responsibility for e decision but suggested the biddingg companies form e common development bureau end agree on one unified
Two years laiar in 10, ihe “Common Bureau of the German Jiiliiy Vehicle Industry”
was formed under the leadership of MAN. The manufacturer are KIoanar-Humboidt-Deurz
On 12 August 1964, BWB drafted the second generation requirements. specification of the next generation called for mostly standard commercial vahirJee with unlimited cn›8e-councy mobility. amphibious, with permanent all-whaal driva. Ion-pressure run flat liras, a siael cab, NBC protraction, a mule ifuel angine and a min rnum service tea of tan yaars.
Because procurement costs wouId heve run t9o high and I’+CTO established a new standefd, the amphibious. NB C and muIIifueI capabilities were BubBaquently cancelled and requiiaments re-drafted. Payload of ihe twin-axle uarsion waB 1nc‹eaaad to 5 ‹, fording dapth sgeciLad io 1,200 mm, bad ha›ght ra›aad to 4 ,65’0 mm, and air coolad Deutz VB anginea wrth and wiiriout turbocharger aa wall aa ‹ x a R 20 aiza liras wefe s ‘ecified. Hcr«ever, even inis ”trimmed-down” version was too expensive rgr comprehensive emure-errt. After further delibereticms
it was decided to procure a smelter number of the specialized, nawly developed high•mob‹Iiiy trucks and supplement them s’ith a number of naar-aTandard mucks. Thia maant the army procured altogether six aitlsrem nan ‹neck modaia. initialiy tnfae of 1nem n ihe nign-mobility off-road
On 4 December 1975, the 8undeswehr and MAH signed the procurement treaty about the deIn’ery of the special military trucks, now split even funher inio two more categories. The first Kategorie I-MAN. the 4o t mil gl. was delivered on 29 Ho/ember 1976.
The firsi model produced was exe: 0x6 and 4×4 variants foIl‹›v/ed.
Tt›e original KAT1 avotvad inio the MAN CK. A law ax-military MAN KAT1 vehicles are released onto ihe 8acond-hand markat in Germany