There is a branch of the US Navy called the Construction Battalion, otherwise known as the SeaBees. I dont' think the CB in CB750 is related. There is a CM series (CM400, for example) which is a bit less flashy (only a speedo, no tach, no frills). I remember reading somewhere that the C in CB stood for Commuter, and the older small Hondas were CA-50 and CA-90. Maybe CB were the next generation?
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.