The Germans used motorcycles extensively for liaison and reconnaissance purposes. BMW, NSU, DKW, and Zundapp produced motorcycles for the German Army. The BMW R/75 746cc 26hp motorcycle is perhaps the best known type, however. All tank divisions had motorcycle infantry units. Two or three motorcycle companies and a HQ company formed a motorcycle battalion. An average infantry division on the Eastern Front in the early stage of the war used 452 motorcycles including those with a sidecar, made up as follows: 17 (HQ co.), 45 (recon unit), 32 (signal battalion), 141 (infantry regiment), 40 (artillery regiment), 45 (anti-tank gun battalion), 44 (engineer battalion), and 88 (supply unit). The average infantry division in 1943 to 1944 came to use an increasing number of Kubelwagens and Kettenkrads which had excellent durability and various uses in place of motorcycles. Thus, the number of motorcycles was reduced to 168. The German Army originally grouped motorcycles into 3 classes: small class under 350cc, middle class 350cc-500cc, and large class over 500cc. Most early models of German military motorcycles proved unreliable after the invasion of Russia and only the BMW R/75 was rugged enough to do the job. It’s reliability was such that after the war the Russian Army used faithful copies of the BMW R/75 called the K-M72 (possibly M72-K or just M72).
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from: http://www.diggerhistory.info/pages-weapons/enemy_ww2-2.htm
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